Stulz C2020 User Manual

EN/07.2013/58/101
Read coil status function
Address Description Note
171 WARNING Send 1 to the PLC if a common warning is active; 0 otherwise
172 A03 - ALARM LOW PRESSURE Send 1 to the PLC if the alarm is active; 0 otherwise
173 A05 - ALARM AIR FLOW Send 1 to the PLC if the alarm AIR FLOW or EVAPORATOR
FANX BLOCKED is active; 0 otherwise
174 A07 - ALARM HEATER THERMIC Send 1 to the PLC if the alarm is active; 0 otherwise
175 A10 - ALARM DIRTY FILTER Send 1 to the PLC if the alarm is active; 0 otherwise
176 A11 - ALARM HIGH TEMPERATURE Send 1 to the PLC if the alarm is active; 0 otherwise
177 A12 - ALARM LOW TEMPERATURE Send 1 to the PLC if the alarm is active; 0 otherwise
178 NOT USED
179 A17 - ALARM LIMIT FAN HOURS Send 1 to the PLC if the alarm is active; 0 otherwise
180 A18 - ALARM INTERNAL TEMPERATURE PROBE Send 1 to the PLC if the alarm is active; 0 otherwise
181 A20 - ALARM EXTERNAL TEMPERATURE PROBE Send 1 to the PLC if the alarm AMBIENT TEMPERATURE
INVALID is active; 0 otherwise
182 A21 - ALARM SUPPLY TEMPERATURE PROBE Send 1 to the PLC if the alarm is active; 0 otherwise
183 A23 - ALARM HIGH PRESSURE PROBE Send 1 to the PLC if the alarm is active; 0 otherwise
184 A24 - ALARM LOW PRESSURE PROBE Send 1 to the PLC if the alarm is active; 0 otherwise
185 A30 - ALARM CLOCK Send always 0 to the PLC; alarm not present
186 ALARM Send 1 to the PLC if a common alarm is active; 0 otherwise
187 A31 - ALARM HIGH PRESSURE Send 1 to the PLC if the alarm CONDENSER PRESSURE is
active; 0 otherwise
188 A35 - ALARM COMPRESSOR THERMIC Send 1 to the PLC if the alarm COMPRESSOR THERMIC or
HIGH PRESSURE is active; 0 otherwise
189 A75 - ALARM POWER FAILURE Send 1 to the PLC if the alarm is active; 0 otherwise
190 FAN STATUS Send the evaporator fan status to the PLC (0 = OFF; 1 = ON).
The fan status is OFF when the fan is present and is running at a
speed superior to M83but the correspondent tachometric signal
input is absent.
191 DAMPER STATUS Send the freecooling damper status to the PLC (0 = OFF; 1 = ON)
192 HEATER STATUS Send the status of the digital input A2 to the PLC (0 = OPEN; 1
= CLOSED)
193 COMPRESSOR STATUS Send the compressor status to the PLC (0 = OFF; 1 = ON). NOTE:
The compressor is ON when the data point Modbus 40301 “Therm
out compressor speed Hz (AOC DRIVE)” for the communication
with the Danfoss compressor is greater than 0.
194 COMMUNICATION STATUS Send 1 to the PLC
Read holding registers function
Address Description Note
3 HIGH PRESSURE PROBE Send the high pressure read by Danfoss compressor (data point Modbus 40204
“Therm in PC (AOC DRIVE)”) to the PLC
4 LOW PRESSURE PROBE Send the low pressure read by Danfoss compressor (data point Modbus 40206
“Therm in P0 (AOC DRIVE)”) to the PLC
5 INTERNAL TEMPERATURE Send the internal temperature to the PLC
6 SUPPLY TEMPERATURE Send the supply temperature to the PLC
7 EXTERNAL TEMPERATURE Send the internal temperature read by Danfoss compressor (data point Modbus 40216
“Therm in ambient temperature (AOC DRIVE)”) to the PLC
8 COMPRESSOR VALUE Send the compressor value read by Danfoss compressor (data point Modbus 40212
“Therm in compressor external speed PCT (AOC DRIVE)”) to the PLC

Stulz C2020 Specifications

General

Brand	Stulz
Model	C2020
Category	Controller
Language	English