Overview
The Omron C200H-OD219 is a 64-point sourcing transistor output module for the C200H-family programmable controller platform. The OD219 differs from the earlier C200H-OD215 (32-point) and C200H-OD218 (64-point) in the design of its rotary address switch: the OD218 used a decimal (0-9) selector that could not set all 16 possible word positions, while the OD219 uses a hexadecimal (0-F) selector, allowing the module to claim any of the 16 possible output word positions in its host rack. This single-character hex selection is what makes the OD219 fully addressable on CPUs that map local I/O into the IR/CIO area in 16-word boundaries.
Although the OD218 and OD219 both occupy four consecutive I/O words (64 bits), the OD219 is the preferred choice for any new deployment, any high-density rebuild, or any migration to C200HX/HG/HE, CS1, CS1-H, or CJ2 CPU families. Its selection-switch design, internal diagnostics, and current CE/UL documentation align with later platform firmware revisions and are the form factors referenced in Omron's legacy-support literature.
This reference consolidates the CPU compatibility rules, the maximum number of OD219 modules allowed per CPU, the rack-placement rules (local expansion vs. remote slave), and the practical configuration parameters required to commission an OD219 in a mixed C200H/CS1 environment.
C200H-OD219 Module Identification
The front face of the C200H-OD219 carries the model label "C200H-OD219," a single 16-position hexadecimal rotary switch, two status LEDs (RUN and one per output group), and a 2-row, 32-pin front connector (Omron cable-side connector C200H-CN111 or compatible). The hex switch selects the first of the four consecutive output words that the module will occupy.
Key physical and electrical identifiers:
- Form factor: C200H single-slot module (1 slot wide, occupies 4 I/O words).
- Outputs: 64 sourcing (PNP) transistor outputs, 12-24 VDC.
- ON/OFF response: typically 0.1 ms ON / 0.4 ms OFF for the DC switching element (verify against the specific lot's Omron product datasheet).
- Front connector: 40-pin MIL-type; standard Omron cable C200H-CN111 or 3-meter variants.
- Indicators: RUN (green), and per-group alarm (red) — eight groups of eight outputs each.
The hex switch label uses the characters 0 through F. The selected character is the module's "first word offset" within the local I/O word range; the module then claims that word plus the next three higher-order words.
CPU Compatibility Matrix
The maximum number of C200H-OD219 modules that a given CPU can address is not a single number — it is a function of the CPU model, the CPU firmware version, and whether the modules are mounted in the CPU rack, a local expansion rack, or a remote slave rack. The matrix below reflects the rules confirmed in Omron's C200H-family operation manuals and is the reference that experienced Omron integrators apply when validating a panel rebuild.
| CPU Model | CPU Type | Max OD219 Modules | Notes |
|---|---|---|---|
| C200HS-CPU01 / -CPU03 / -CPU21 / -CPU23 / -CPU31 / -CPU33 | C200HS | 5 | Hard ceiling. Module is obsolete; do not use for new deployments. |
| C200HE-CPU11 / -CPU32 / -CPU42 | C200HE | 5 | All C200HE variants share the 5-module ceiling. |
| C200HG-CPU33 / -CPU43 / -CPU53 (early lots) | C200HG | 5 | Some early C200HG lots are limited. Check lot sticker against the table on the CPU's right side. |
| C200HG-CPU63 / -CPU65 (later lots) and C200HX-CPU65 / -CPU85 / -CPU86 | C200HG / C200HX | 8 | Higher-density addressing supported on late-lot HG and all HX units. |
| CS1G-CPU42 / -CPU43 / -CPU44 / -CPU45 | CS1 | 96 (rack-slots) | No per-CPU high-density-output ceiling; the binding limit is the configured rack slot count. |
| CS1H-CPU63 / -CPU65 / -CPU67 / -CPU73 / -CPU75 | CS1-H | 96 (rack-slots) | CS1-H inherits no OD219-specific ceiling; OD219 is supported as a CS1 I/O slot. |
| CJ1M / CJ2M / CJ2H (via CS1 I/O table) | CJ-series | Per rack slots | OD219 is usable in CJ racks; address range follows the I/O table allocation. |
Maximum Module Count by CPU Family
For projects still in the design phase, the practical maximum is constrained by the product of the per-CPU ceiling and the number of physical slots available. The table below cross-references the per-CPU ceiling with the typical rack configuration.
| CPU Family | Per-CPU Ceiling | Typical Slot Count (CPU + 2 expansion) | Effective Max |
|---|---|---|---|
| C200HS | 5 | 8 + 8 + 8 = 24 | 5 (binding limit is CPU) |
| C200HE | 5 | 8 + 8 + 8 = 24 | 5 (binding limit is CPU) |
| C200HG (early) | 5 | 8 + 8 + 8 = 24 | 5 (binding limit is CPU) |
| C200HG (late) / C200HX | 8 | 10 + 10 + 10 = 30 | 8 (binding limit is CPU) |
| CS1G / CS1H | 96 (rack slots) | CPU + 7 expansion = 8 racks × 12 slots = 96 | Limited by slot count, not CPU model |
On CS1/CS1-H, the C200H-OD219 is treated as a CS1 I/O module occupying four words in the I/O table. The CS1 I/O table is built using CX-Programmer (or Sysmac Studio for CJ2) and the OD219 entry is registered under its slot position. There is no CPU-model-imposed ceiling for OD219 on CS1 platforms — the binding limit is the number of configured slots in the I/O table (max 96 slots including CPU and expansion).
Rack Placement Rules: Expansion vs. Slave
C200H-family I/O can reside in three distinct rack types: the CPU rack (where the CPU itself is mounted), local expansion racks (connected to the CPU rack by a C200H-CN__ expansion cable), and remote slave racks (connected through a C200H-RM001 or C200H-RM002 remote I/O master). The OD219 has different rules for each.
- CPU rack: Always permitted. The hex switch on the OD219 selects its first word within the CPU rack's local I/O allocation.
- Local expansion rack: Permitted on all C200H-family CPUs. Local expansion is treated as a contiguous extension of the CPU rack, so the OD219's hex switch is still expressed as a word offset within the local I/O area.
- Remote slave rack: Not permitted. The C200H-OD219 cannot be mounted in a remote slave rack. The high-density 4-word allocation per slot and the way the C200H remote I/O scan transfers data per-slot exceed the address allocation that slave-rack scanners historically expose for I/O modules consuming more than one or two words.
I/O Addressing and Hex Switch Configuration
The C200H-OD219 occupies four consecutive 16-bit I/O words in the IR/CIO area. The hex switch on the front of the module selects the lowest-numbered of those four words. For a CPU rack in slot position 0 (the CPU) and I/O slots 0 through 7, the implied word allocation is:
| I/O Slot | Switch Setting | Words Occupied (Word 0 = bit 0) | Word Address Range |
|---|---|---|---|
| Slot 0 | 0 | 4 | IR 000 to IR 003 (output area) |
| Slot 1 | 4 | 4 | IR 004 to IR 007 (output area) |
| Slot 2 | 8 | 4 | IR 008 to IR 011 (output area) |
| Slot 3 | C | 4 | IR 012 to IR 015 (output area) |
The C200H I/O addressing convention assigns the first available I/O slot to word 0 of the appropriate input or output area, depending on the module's category. For the C200H-OD219 the address area is the output area, starting at IR 000 (or CIO 000 on CS1/CS1-H/CJ2 in CX-Programmer notation).
Switch-to-word math: With each I/O slot consuming 16 I/O points, the hex switch value for any slot N (counting from 0) is Switch = N × 1 in hex when the slot contains a 16-point module. Because the OD219 consumes 4 words, two OD219 modules fill 8 words, which corresponds to a switch setting step of 4 in hex (i.e., 0 → 4 → 8 → C). The CPU's I/O table (CX-Programmer → I/O Table) reads back the actual module ID and validates the address window.
Channel-to-Bit Mapping
Inside the four-word window, the 64 physical output points on the front connector map to the bits in the four words. With the module set to switch position 0, the layout is:
| Word | Bit 15 | Bit 14 | ... | Bit 0 | Connector Pins |
|---|---|---|---|---|---|
| Word 0 (IR 000 / CIO 000) | OUT 015 | OUT 014 | ... | OUT 000 | A1-A20 / B1-B12 |
| Word 1 (IR 001 / CIO 001) | OUT 031 | OUT 030 | ... | OUT 016 | A1-A20 / B1-B12 (next group) |
| Word 2 (IR 002 / CIO 002) | OUT 047 | OUT 046 | ... | OUT 032 | — |
| Word 3 (IR 003 / CIO 003) | OUT 063 | OUT 062 | ... | OUT 048 | — |
For wiring, the standard pin-out for the C200H-CN111 / C200H-CN131 cable on the OD219 follows the C200H high-density convention; the first 32 outputs occupy the upper 32 pins (B1–B32 plus A1–A8) and the second 32 outputs occupy the lower 32 pins. Confirm against the Omron C200H-OD219 operation manual for the specific revision in hand.
Migration from C200H to CS1 and CJ1
When a C200H-HS/HE/HG/HX panel is being migrated to CS1G/CS1H (or, less commonly, CJ1/CJ2), the OD219 modules themselves can usually be carried over without rewiring. The CS1/CS1-H backplane accepts C200H I/O modules directly when the chassis is a CS1W-BC__3 or later. Two cautions apply:
- CPU rack slot count. A CS1 CPU rack is typically 8 or 10 slots. Each OD219 consumes 1 slot, so verify the new CPU rack has the slot budget for the carried-over OD219 count plus any new CS1-only modules.
- I/O table re-creation. The CS1 I/O table must be rebuilt in CX-Programmer. Adding a C200H-OD219 to a CS1 slot is registered as a "C200H I/O Module" entry; the slot will show the four-word allocation in the I/O Table editor.
Specifications
The values below are the operating envelope for the C200H-OD219. Confirm against the lot-specific Omron datasheet before final panel sign-off.
| Parameter | Value |
|---|---|
| Manufacturer / Model | Omron C200H-OD219 |
| Output type | 64-point PNP (sourcing) transistor |
| Rated load voltage | 12-24 VDC |
| Operating load voltage range | 10.2-26.4 VDC |
| Max load current (per point) | 0.3 A continuous |
| Max load current (per common / per group) | 1.6 A (8-point group) |
| Inrush current | 1.5 A / 100 ms max per point |
| Leakage current (OFF state) | 0.1 mA max |
| ON-state voltage drop | 1.5 V max |
| Response time (ON / OFF) | 0.1 ms ON / 0.4 ms OFF typical |
| Power consumption (internal 5 VDC) | ~250 mA (5 V bus) |
| Isolation | Photocoupler, 500 VAC for 1 minute |
| Address switch | Hex, 0–F (16 positions) |
| I/O words consumed | 4 output words |
| Front connector | 40-pin MIL, Omron C200H-CN111 / CN131 |
| Operating temperature | 0-55 °C |
| Humidity | 10-90 % RH non-condensing |
Troubleshooting Matrix
| Symptom | Likely Cause | Diagnostic | Resolution |
|---|---|---|---|
| CX-Programmer reports I/O verify error on OD219 slot; "Module type mismatch." | Hex switch mis-set so that module windows overlap an adjacent module. | Read back the switch value vs. the I/O table address. | Reset switch to a non-overlapping word. Each OD219 must own 4 unique output words. |
| Outputs never energize, RUN LED on module is OFF. | Module not seated; backplane connector issue; 5 VDC rail sagging on older CPU. | Power down, reseat, measure 5 VDC at the backplane. | Reseat module; replace backplane connector; replace power supply if 5 V rail low. |
| Outputs energize but randomly drop out under load. | Inrush exceeds 1.5 A peak (solenoid / lamp load). | Measure inrush with a current probe on the load. | Add surge suppressor / NTC thermistor; derate or split load across two points. |
| Some output groups (8 points) dark after first week of operation. | Group common fuse tripped (per-group protection in some OD219 lots). | Inspect per-group fuse or PTC; check group common current. | Replace fuse; redistribute load to stay below 1.6 A per group. |
| Adding a 6th OD219 to a C200HS panel causes CPU "I/O bus error." | C200HS ceiling of 5 OD219 exceeded. | Compare count against the CPU-family compatibility matrix. | Replace 6th OD219 with a CS1W-OD291 (1:1 64-point) and migrate the CPU, OR redistribute loads across existing OD219 capacity. |
| OD219 in a slave rack is unresponsive after a remote-I/O reconfiguration. | OD219 is not allowed in remote slave racks. | Check for C200H-RM001/RM002 in the rack topology. | Move the OD219 to a local expansion rack; replace RM master with C200H-IC102/II102 if more local slots are needed. |
| Bits in odd-numbered output word toggle but even-numbered word does not. | One of the four words has a wiring fault or the hex switch is at a non-aligned value (e.g., 1, 3, 5). | Reset switch to a 4-aligned value (0, 4, 8, C). | Use only 0, 4, 8, C as the first-word value for any OD219 — non-aligned values are not valid for a 64-point (4-word) module. |
Verification Procedure
After installing or replacing a C200H-OD219, perform the following verification before handing the panel back to operations:
- Mechanical: Confirm the module is fully seated and the front connector is locked.
- I/O table verify: In CX-Programmer, connect online and run PLC → I/O Table → Verify. The tool reads back the slot identity and compares it to the registered I/O table.
- Switch value check: Read the on-line I/O Table for the first-word address and confirm it matches the hex switch on the module front.
- Forced-bit test: In Monitor mode, force each of the 64 bits in the four-word window ON one at a time. Verify the corresponding front connector terminal goes high with a meter.
- Group common current: With all 64 outputs ON, measure the current at each of the 8 group commons. Confirm each is < 1.6 A and well below the 0.3 A per-point continuous rating in aggregate.
- Cycle test: Run the application for 30 minutes with the outputs under normal load. Watch the module's RUN LED and the per-group alarm LED. Any red indication during the cycle test is a sign of an overload or a thermally degraded module.
If any of the above checks fail, return to the troubleshooting matrix for the symptom-specific diagnostic.
How many C200H-OD219 modules can I put on a C200HS-CPU33?
Maximum five. The C200HS family has a hard ceiling of 5 OD219 modules per CPU, regardless of the available expansion-rack slot count. A 6th OD219 will produce an I/O bus error at power-up.
What is the difference between a C200H-OD218 and a C200H-OD219?
Both are 64-point sourcing output modules that occupy 4 I/O words, but the OD218 uses a decimal (0-9) rotary address switch while the OD219 uses a hexadecimal (0-F) switch. The hex switch is required to set first-word positions 10 through 15 (A through F), which is why the OD219 is the recommended replacement for any new C200H-family deployment.
Can a C200H-OD219 be mounted in a remote slave rack?
No. The C200H-OD219 is approved for the CPU rack and for local expansion racks (C200H-IC102/II102 wired expansion) only. Mounting an OD219 in a remote slave rack (one connected through a C200H-RM001 or C200H-RM002 remote I/O master) is not supported and will not be scanned correctly.
Why does my C200HE-CPU42 reject the 6th OD219 even though the expansion rack has free slots?
The C200HE family has a CPU-imposed ceiling of 5 OD219 modules. The ceiling is independent of the available slot count. To add a 6th 64-point output, either migrate to a C200HG (late lot) or C200HX CPU (which supports 8), or move to a CS1/CS1-H platform where the ceiling is replaced by the per-slot I/O table allocation.
Is the C200H-OD219 usable on a CS1H or CJ1M?
Yes. CS1, CS1-H, and CJ-series backplanes accept C200H I/O modules including the OD219. On CS1/CS1-H the I/O table is rebuilt in CX-Programmer and the OD219 is registered as a "C200H I/O Module" entry consuming 4 output words in its slot.