19.5 Message Formats
19.5.3 Formats 1, 2 (GOT-A900 series microcomputer connection)
19 - 35
17
CONNECTION TO
ALLEN-BRADLEY PLC
18
CONNECTION TO
SIEMENS PLC
19
MICROCOMPUTER
CONNECTION
20
CONNECTION TO OMRON
TEMPERATURE
CONTROLLER
21
CONNECTION TO
YAMATAKE TEMPERATURE
CONTROLLER
22
CONNECTION TO RKC
TEMPERATURE
CONTROLLER
23
CONNECTION TO
FREQROL SERIES
INVERTER
24
SERVO AMPLIFIER
CONNECTION
(3) Random read in word units (RR) command
The following shows an example of reading the two points of the virtual devices D100 and M0 to
M15.
(Assuming D100="0064
H" and M0="1" are stored.)
Item Message format
Request message
(host GOT)
Response
message during
normal
communication
(GOT host)
Response
message during
faulty
communication
(GOT host)
(format 1: GOT-A900 series microcomputer connection (format 1))
(format 2: GOT-A900 series microcomputer connection (format 2))
D100 0064H
0001HM15 to 0
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
35
33
H 35H
Sum
Check
(H) (L)
Command
RR
52
H 52H
(H) (L)
Address 1
01
30
H 31H
––
0
30
H
0
30
H
(H) (L)
Address 2
83
38
H 33H
––
2
32
H
0
30
H
Sum check is performed in this range.
02
H
STX
03
H
ETX
(H) (L)
8E
38
H 45H
Sum
Check
(H) (L)
Data 1 (D100)
0
30
H
––
6
36
H
4
34
H
0
30
H
00000000
M
0
M
1
M
2
M
3
M
4
M
5
M
6
M
7
M
8
M
9
M
1
0
M
1
2
M
1
3
M
1
4
M
1
5
M
1
1
10000000
(H) (L)
Data 2 (M15 to 0)
0
30
H
––
0
30
H
1
31
H
0
30
H
15H
NAK
The above is a case where
the sum check error (06
H)
has occurred.
15
H
NAK
06
H
Error
code
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