Xylem 205546 Modbus Communication Modules for Displays - Manual (Page 25)

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4.3 mA-Bus Converter List
• Date: 2008-06-11
• Firmware: 845001-003
• Protocol: Modbus RTU
• Transfer rate: 9600 baud
• Format for serial com: 1-Startbit, 8-Databits, 1-Parity (Even), 1-Stopbit
• Password: OFF (default)
• To set up the converter, use the Display Unit
When a mA-Bus Converter is connected to an external master, for example a PLC or an HMI interface, the
Display Unit can not be used simultaneous on the RS 485 communication port. Support only Read is ”func.
03 (0x03) Read Holding Registers” or ”func. 04 (0x04) Read Input Registers” and write ”func. 16 (0x10) Write
Multiple registers”
Reg.
addr.
Reg.
name
Type
Se-
cu-
rity
Read/
Write
100 DI 3-1 status U16 None
200 Digital input Bit 1-16 U16
300 AI 1 Scaled value F32 {Low} None
301 - F32 {High}
302 AI 1 Unit U16
303 AI 1 Precision S16
304 AI 2 Scaled value F32 {Low} None
305 - F32 {High}
306 AI 2 Unit U16
307 AI 2 Precision S16
1001 System Error bit 1-16 U16
1002 Alarm Error 1 U16
1003 Alarm Error 2 U16
4. Register Lists
Modbus Communication Modules