Serial Communications 3101/3201
REC XXXXX
3-41
reg_set_point_1(2) 89
H
reg_set_point_2(1) 8A
H
register address
note
reg_set_point_2(2) 8B
H
dsp_set_point_1(1) 8C
H
dsp_set_point_1(2) 8D
H
dsp_set_point_2(1) 8E
H
dsp_set_point_2(2) 8F
H
ctr_deviation_1(1) 90
H
ctr_deviation_1(2) 91
H
ctr_deviation_2(1) 92
H
ctr_deviation_2(2) 93
H
hi_pos_dev_1(1) 94
H
hi_pos_dev_1(2) 95
H
cal_error(1) 84
H
cal_error(2) 85
H
3.7 Modbus
3.7.1 Description
This protocol has been implemented as described in : - “Gould Modicon Modbus
Protocol” – Reference Guide – November 1993 – Rev.A (Gould Inc. Programmable
Control
Division).
NOTE:
Only a subset of the protocol has been implemented, as described in this
chapter.
-
Message of data query from host (PC or PLC) to Slave (3000) (code 03H)
QUERY
Address xxx
function
03H
add.hi
xxx
add.lo
xxx
n.data hi
xxx
n.data lo
xxx
crc16 lo
xxx
crc16 hi
xxx
REPONSE MESSAGE
Address xxx
function
03H
byte cnt
xxx
data MSB
xxx
… xxx
data LSB
xxx
crc16 lo
xxx
crc16 hi
xxx
Содержание Ramsey Micro-Tech 3000 Series
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