Siemens 6SE7024-7ED61 Masterdrive CBP2 Profibus Programming

1. Drive Identification and Rating

The unit described in the original request — 6ES7 024 7ED61-Z — is the SIMOVERT MASTERDRIVES Vector Control (VC) Compact chassis. The correct Siemens part number is 6SE7024-7ED61 (with the leading 6SE70 family prefix, not 6ES7). The 6ES7 prefix belongs to S7-series PLCs and is a common transcription error when reading the nameplate.

All parameter numbers, fault codes, and BICO interconnections in this article are referenced against the V3.32 operating-instructions release. Confirm the firmware revision of the connected drive (read parameter r060.0 with a PMU or DriveMonitor) before commissioning — drives below V3.0 lack the parameter set used in the PKW sections below.

2. Profibus Interface — CBP and CBP2 Selection

Communication between the MASTERDRIVES chassis and the Profibus DP master is performed by the Communication Board PROFIBUS. Two hardware revisions exist; the later CBP2 is the recommended choice for new installations.

Both boards share a common GSD file (see section 3). Order the 6SX7010-0FF05 when requesting a replacement CBP2 — it ships with the internal flat-ribbon harness that mates the board to the CU/CUD.

3. GSD File — SIEM8045

All MASTERDRIVES (VC and MC) and DC-Master (6RA70) units using a CBP or CBP2 board share a single Profibus GSD file. The Siemens ident number for this GSD is:

Ident Number: SIEM8045
Device name in STEP 7 HWConfig: MASTERDRIVES / DC Master CBPx
File name: SIEM8045.GSD (legacy) or si8045.gsd (V5 GSD format)

Two installation paths are possible inside SIMATIC STEP 7:

1. Standard GSD install. Place the SIEM8045.GSD file into the STEP 7 GSD directory (typically \S7HW\S7DATA\GSD) and run Options → Install GSD File. After this, the device appears in HWConfig under PROFIBUS DP → Additional Field Devices → Drives → SIEMENS AG → MASTERDRIVES / DC Master CBPx.
2. DriveES Basic install (preferred). Install the DriveES Basic option package on top of STEP 7. The package registers an Object Manager that adds extra MASTERDRIVES / DC-Master catalogue entries (highlighted in yellow in HWConfig) and provides a direct parameter view inside the SIMATIC Manager. DriveES Basic is what enables the yellow-bordered slave icons in the hardware catalogue and is required for DriveMonitor-style parameter access from STEP 7.

4. DriveES Basic — Installation and Function

DriveES Basic is the official Siemens option package for integrating SINAMICS, MASTERDRIVES, and DC-Master drives into STEP 7. It does the following:

• Registers an Object Manager in the SIMATIC Manager.
• Adds MASTERDRIVES / DC-Master as a dedicated Insertable Object with parameter dialogs.
• Allows DriveMonitor V5.x parameter transfer via the PLC routing path (no direct serial port required).
• Provides the start-up, parameter, and fault-diagnostics dialogs that read Pxxx / rxxx directly.

Install DriveES Basic before HWConfig is opened for the first time on the project, and reboot the PG/PC after the install. The package is available from the Siemens Industry Online Support portal under entry ID support.industry.siemens.com (search "DriveES Basic"). DriveES V5.5 and V6.x both support the SIEM8045 GSD.

5. Profibus Network Topology with a Joystick Slave

A typical architecture for joystick-driven speed control is shown below.

Two DP slaves exchange data with the same PLC. The PLC runs a single cyclic I/O image: it reads the joystick word, scales it, and writes the resulting setpoint word into the MASTERDRIVES PZD channel.

6. Telegram Selection in HWConfig

Open the MASTERDRIVES slave in HWConfig and assign slot 0 / slot 1 modules. For a joystick setpoint application, the standard Siemens PPO types are sufficient. PPO type 1 or PPO type 4 is recommended for direct setpoint transfer.

For joystick speed reference, PPO3 (no PKW) keeps the program simple if all parameters are pre-configured on the drive via DriveMonitor. If the PLC must also set ramp time, control word, or fault reset, use PPO1.

7. Drive-Side Parameterisation

The MASTERDRIVES receives setpoints over Profibus and must be wired internally with BICO (Binector / Connector) technology. The minimum parameter set for Profibus control is:

For V3.32 firmware the exact parameter list is documented in the SIMOVERT MASTERDRIVES Operating Instructions, software release V3.32 (PDF, document ID 23658440). Always cross-check P368, P443, and the BICO connectors against the live parameter list using PMU parameter access before saving the configuration.

8. Control / Status Word Bit Layout (PPO1 / PPO3)

The default Siemens "frequency-converter profile" for MASTERDRIVES places the following bits in PZD word 1:

PZD word 2 from the master is the main setpoint in normalised units (0x4000 = 100 % reference). The actual speed feedback to the PLC is read in PZD word 2 from the drive, with the same scaling.

9. Joystick Scaling and STEP 7 Code

A typical 2-axis joystick provides 0–10 V or 4–20 mA on two analogue channels, plus a digital enable input. The joystick Profibus node converts the analogue values into normalised words (commonly 0x0000–0x7FFF or 0x0000–0x7EFF). The PLC reads these and converts them to the MASTERDRIVES reference scale.

1. Read raw joystick word from the joystick DP slave, e.g. IW 64.
2. Centre / dead-band compensation. Subtract 0x4000 (mid-scale) and zero any value within ±0x100.
3. Scale to 0x0000–0x7FFF (unsigned) or to ±0x4000 (signed bipolar reference).
4. Apply ramp limit per scan to avoid step changes in the speed reference.
5. Write to MASTERDRIVES PZD via SFC14 / SFC15 on the configured I/O area (e.g. QW 64 for setpoint, QW 66 for control word).

9.1 STEP 7 STL example — FB100 Joystick to Setpoint

FUNCTION_BLOCK FB100
TITLE   ='Joystick to Masterdrive setpoint (PPO3, slave 5)'
VAR
    iRaw         : INT;           // IW 64 from joystick slave
    iCentre      : INT;           // -16384
    iDeadBand    : INT;           // 256
    iSetpoint    : INT;           // 0..32767 to drive
    rActual      : REAL;          // scaled reference %
    bEnable      : BOOL;          // I 8.0 joystick enable
    wCtrl        : WORD;          // QW 64 control word
    wSetp        : WORD;          // QW 66 setpoint word
END_VAR
BEGIN
    NETWORK 1   // Read and centre the joystick
        L     IW 64
        T     #iRaw;
        L     #iCentre;
        -I    ;
        T     #iCentre;

    NETWORK 2   // Dead-band
        L     #iCentre;
        ABS    ;
        L     #iDeadBand;
        >I    ;
        JC    _SCALE;
        L     0;
        T     #iSetpoint;
        JU    _CTRL;

    _SCALE: NOP 0;
        L     #iCentre;
        L     16384;
        *I    ;
        T     #iSetpoint;

    NETWORK 3   // Build control word (ON, Enable, Setpoint enable, Master control)
        _CTRL: NOP 0;
        L     0;
        L     #bEnable;
        =     #wCtrl.%X0;        // ON
        S     #wCtrl.%X3;        // Enable
        S     #wCtrl.%X5;        // Setpoint enable
        S     #wCtrl.%X10;       // Master control

    NETWORK 4   // SFC15 to write PZD
        CALL  SFC15
             LADDR  := W#16#100   // PZD area, base address from HWConfig
             RECORD := P#M 100.0 WORD 4
             RET_VAL:= MW 200;
END_FUNCTION_BLOCK

10. Commissioning Procedure

1. Power the drive, confirm the READY LED on the CUD is green.
2. Set P060 = 5 at the PMU. Read back r001 = 5 to verify.
3. Connect the CBP2 in option slot D, route the internal harness, restart the drive.
4. Open STEP 7, confirm GSD SIEM8045 is visible in HWConfig, and insert MASTERDRIVES / DC Master CBPx at the correct Profibus address (default 5 for the first drive in the segment).
5. Set PPO3 in the slave configuration. The diagnostic repeat of the drive should show PZD length = 2 / 2.
6. Download HWConfig. The drive should appear online in DriveES Basic / DriveMonitor.
7. Run the drive with a DriveMonitor 'control panel' (CW = 0x047E, setpoint 0) to verify the bus is alive.
8. Switch control to the PLC. Verify cyclic I/O is being written by toggling STW1.0 and reading the status word (bit 0 should toggle, drive should enable).
9. Move the joystick. The setpoint word in PZD2 should change.
10. With the motor decoupled (or at very low reference), enable and ramp up to confirm direction and scaling.

11. Verification Checklist

12. Troubleshooting Matrix

13. Standards and Reference Documents

• SIMOVERT MASTERDRIVES Vector Control Operating Instructions (V3.32) — primary parameter and BICO reference.
• Siemens PROFIdrive profile for MASTERDRIVES — drives the PPO type and control-word layout described in section 8.
• Siemens DriveES Basic — STEP 7 option package, required for full MASTERDRIVES integration.

14. FAQ