Sime 021 - Page 30

Air/water inverter chillers and heat pumps with axial fans
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Alarm code DESCRIPTION 
E691 Low pressure transducer failure Machine
E701 High pressure transducer failure Machine
E711 Fault in voltage input 0-10V DC Machine
E801 Inverter communicaon meout Compressor
E851 Inverter hardware problem Compressor
E861 Motor current too high Compressor
E871 High inverter heatsink temperature Compressor
E881 Supply voltage out of limits (DC bus) Compressor
E891 Compressor not connected Compressor
E901 Wrong compressor model Compressor
E911 Overload protecon Compressor
E921 PFC/POE overcurrent Compressor
E931 Internal communicaon error Compressor
E941 PFC fault Compressor
E951 Heatsink and/or ambient temperature sensor fault Compressor
E961 Abnormal condion Compressor
E971 EEPROM error Compressor
24. MODBUS VARIABLES
The control has the following modbus conguraon by default:
BAUD RATE 9600
PARITY EVEN
DATA BIT 8
STOP BIT 1
DEVICE ID 1
To congure the Modbus communicaon according to your requirements, you must modify the following logs:
H124 : BAUD RATE
0 4800
1 9600
2 19200
3 38400
H125 : PARITY, STOP BIT
0 NONE, 2 bit
1 ODD, 1 bit
2 EVEN, 1 bit
3 NONE, 1 bit
H126 : DEVICE ID 1 ÷ 200
Modbus comands:
READING HOLDING REGISTER
WRITING 6-16
 Format Bit R/W  Name  Note
1 INT - R -
Firmaware informa-
on
Firmaware versione
2 INT - R - Firmware release
3
BYTE (H) - R - Firmware sub-release
BYTE (L) - R - Firmware creaon day
4
BYTE (H) - R - Firmaware creaon month
BYTE (L) - R - Firmware creaon year
80 ÷ 97 ASCII - R - Serial number Registraon number
444 INT - R 0 ÷ 800 Water ow rate
1089 INT - R/W 1 ÷ 200 Serial address Modbus serial ID