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17.10 The value of parameters being monitored through the use of an auxiliary Altronic DSM series
device can be retrieved serially through the DE-2500. This is done by sending a special serial
command.
>(01 DL 00A)
The response from the DE-2500 will consist of a 512 byte ASCII text string with delimiters.
The message will include the values of the monitored DSM channels as well as appropriate
header information and engineering units. For this feature to be active, the auxiliary DSM
option must be selected during the programming of the DE-2500.
17.11 The DE-2500 system can be reset or stopped remotely by sending a serial command string.
REMOTE RESET >(01 AUTO)
REMOTE STOP >(01 STOP)
17.12 The DE-2500 is compliant to the Modicon Modbus RTU standard. The DE-2500 only
supports register reads; data is duplicated for the 30000’s and 40000’s address range.
Maximum number of registers that can be read at one time has been limited to 32. See the
Modbus Address List at pages 55-56. NOTE: The first 8 Modbus registers duplicate the
registers of the Altronic DD-40NTS to simplify user software requirements, if both types of
systems are in use.
17.13 IDENTIFICATION - In addition to the above, the DE-2500 will respond to function code 17
with an identification string as follows:
Query:
NN 17 CRC CRC
NN = node number, 17 = ID function code, CRC CRC = two byte Modbus RTU CRC.
Response:
NN 17 07 D E - 2 5 0 0 CRC CRC
NN = node number, 17 = ID function code, 07 = number of bytes to follow, DE-2500
( seven byte ASCII ID string ), CRC CRC = two byte Modbus RTU CRC
17.14 REMOTE STOP/RESET - Register 40999 can be written to remotely trigger the stop and
reset functions. It will respond to a single write only (function code 06). The stop command
is 0x53AC. The reset command is 0x41BE.
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