Function Code - TECSYSTEM MULTIMODULE 133 Instruction Manual

TECSYSTEM S.r.l ®

11) FUNCTION CODE

MULTIMODULE 133 module supports the following function codes:
- holding register reading
3 :
(10)
- register multiple writing
16 :
(10)
If MULTIMODULE 133 receives a message and a CRC error is detected, no answer
is given.
12) CODE 3
(10)
Request:
Slave address, code 3
(10)
Number of Point LO, Crc LO, Crc HI.
Answer:
Slave address, code 3
(10)
13) CODE 16
(10)
Request:
Slave address, code 16
(10)
Number of Point LO, Byte count, Data HI, Data LO......., Crc LO, Crc HI.
Answer:
Slave address, code 16
(10)
HI, Number of register LO, Crc LO, Crc HI.
The writable registers are the one from 00-17 to 00-31 and from 00-33 to 00-34.
Therefore the possible starting addresses are: 00-17, 00-25 e 00-33.
Number of Point LO parameter can be set from 1 to 8 (max).
If a writing request is sent to an address different from the above mentioned ones, MUL-
TIMODULE133 will answer with an error code 02 (wrong data address).
If a writing request for more than 8 registers is sent (Number of point LO), MULTI-
MODULE won't be able to accept the request and it won't give any answer; there-
fore the request will go in "timeout".
6
, Starting address HI, Starting address LO, Number of Point HI,
, Byte count, Data HI, Data LO......., Crc LO, Crc HI.
, Starting address HI, Starting address LO, Number of Point HI,
, Starting address HI, Starting address LO, Number of Register
MULTIMODULE 133