CONTREX MLP-Trim - Manual (Page 117)

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Parameter Send
Use the Parameter Send to change any of the MLP–Trim's Control Parameters.
Table 3-51 Parameter Send - Host Transmission
Character # 1 2 3 4 5 6 7 8 9 10 11 12
DEV # DEV # MSG PAR # PAR # DATA DATA DATA DATA DATA
DESC STX 10s 1s TYPE 10s 1s 1000s 100s 10s 1s FORM ETX
ASCII STX 0-9 0-9 3 0-9 0-9 0-9 0-9 0-9 0-9 0-7 ETX
The following is a description of the Parameter Send-Host Transmission Characters.
Character 1 - STX:
This is the first character in the character string. None of the other characters will
be recognized without this character prefix. Always use the ASCII “STX” character;
it enables the MLP–Trim's receive buffer.
Characters 2, 3 - Device #:
These characters are the access address of the MLP–Trim. This number identifies
individual MLP–Trims on a multidrop system. The MLP–Trim will accept data only if
this number matches the MLP–Trim's address (CP-70), with the exception of a “00”
address. The “00” address is universally accepted by all of the MLP–Trims that are
on the RS485 Serial Communications Interface.
Character 4 - Message Type:
This character should always be “3”.