Instructions

Table 9 (Continuation): Modbus variables: Instantaneous values.
Description Address Size Units
Phase 2 cos φ 0x0740 32 bits 2 decimal places
Phase 3 cos φ 0x0742 32 bits 2 decimal places
Phase 1 active power 0x0746 32 bits W
Phase 2 active power 0x0748 32 bits W
Phase 3 active power 0x074A 32 bits W
Total active power 0x074C 32 bits W
Phase 1 reactive power 0x074E 32 bits var
Phase 2 reactive power 0x0750 32 bits var
Phase 3 reactive power 0x0752 32 bits var
Total reactive power 0x0754 32 bits var
Phase 1 apparent power 0x0756 32 bits VA
Phase 2 apparent power 0x0758 32 bits VA
Phase 3 apparent power 0x075A 32 bits VA
Total apparent power 0x075C 32 bits VA
Note: Some MODBUS variables may not be available depending on the CEM energy meter coupled to
the CEM M-ETH. See “4.4.2.7.- Available addresses by unit”
4.4.2.5.- Other parameters
The Read function is implemented for these variables.
Table 10: 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-ETH. See “4.4.2.7.- Available addresses by unit”
(1)
Energy meter model description table, Table 11.
15
Instruction Manual
CEM M-ETH