Lauda MC 250, Operation Instructions Manual

Page: 43 / 64

6.7.4 Read commands
The following read commands are data requests to the thermostat.
Command Meaning
IN_PV_00 Query of the bath temperature (outlet temperature)
IN_SP_00 Query of the temperature setpoint
IN_SP_04 Query of the outlet temperature limit Hi
IN_SP_05 Query of the outlet temperature limit Lo
TYPE Query of the device type (response = "MC").
VERSION Query of the software version number
STATUS Query of the device status, 0 = OK, -1 = fault
STAT Query for the fault diagnosis, response: XXXXXXX; X = 0 no
fault, X = 1 fault
Character 1 = error
Character 2 = not assigned
Character 3 = not assigned
Character 4 = not assigned
Character 5 = low level
Character 6 = not assigned
Character 7 = not assigned
Note the following:
n
For "_", " " (space character) is also permitted.
n
Unless otherwise specified for the command, the reply is always in fixed
decimal format "XXX.XX" or "-XXX.XX" for negative values or "ERR_X".
6.7.5 Error messages
The error messages of the modules are described in the following.
Error Description
ERR_2 Incorrect input (e.g. buffer over-
flow)
ERR_3 Incorrect command
ERR_5 Syntax error in the value
ERR_6 Impermissible value
ERR_32 The upper temperature limit is less
than or equal to the lower tem-
perature limit.
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