CIRCUTOR CEM-M-RS-485 - Manual (Page 16)

4�4�4�5�- Other parameters
The Read function is implemented for these variables.
Table 8: Modbus variables: Other parameters�
Description Address Size Units
Energy meter model 1) 0xF010 6x16 bits 12 bytes in ASCII format
Serial no 0x2710 32 bits -
Transformation ratios
Voltage primary 0x044C 32 bits V (1 decimal place)
Voltage secondary 0x044E 32 bits V (1 decimal place)
Current primary 0x0450 32 bits A (1 decimal place)
Current secondary 0x0452 32 bits A (1 decimal place)
Energy meter firmware version
Higher firmware version 0x0050 16 bits -
Lower firmware version 0x0051 16 bits -
Revised firmware version 0x0052 16 bits -
Communications module firmware version
Higher firmware version 0x0578 16 bits -
Lower firmware version 0x0579 16 bits -
Revised firmware version 0x057A 16 bits -
Note: Some MODBUS variables may not be available depending on the CEM energy meter
coupled to the CEM M-RS485. See “4.4.4.7.- Available addresses by unit”
(1) Energy meter model description table, Table 9�
Table 9: Energy meter model description table�
Options C10 C20 C30
bytes in ASCII
format
Connection mode
2 wires  2
4 wires   4
Accuracy
Class B active / Does not measure
reactive energy
   10
Class B active / Class 2.0 reactive    12
Measurement voltage
1x230
 E
1x127  B
3x127/220 ... 3x230/400 V  U
3x127/220 V   N
3x230/400 V   Q
3x57/100 ... 3x230/400 V  V
3x57/100 V  L
3x63.5/110 V  M
Current measurement
Shunt 10(60) A  S4
Shunt 5(65) A  S7
Direct 10(60)A 
D4
Direct 5(65)A  D7
Transformer 5(10) A  T5
Transformer 5(6) A 
T6
16
CEM M-RS485
Instruction Manual