Instruction manual
5. RKC COMMUNICATION PROTOCOL
IMR01H02-E3
21
5.1.2 Polling procedure example (Multi-point mode)
Four channels specification of MA900 is used in the procedure example for explanation, but
the same setting procedures also apply to MA901. However, the 8-channel specification
applies to the MA901. Therefore, refer to procedure examples by replacing the 4-channel
specification for the MA900 with the 8-channel specification for the MA901.
(1) When no memory area number is specified
!"
Normal transmission
!"
Error transmission
E
O
T
0 0 M 1
E
N
Q
S
T
X
M 1 0 1 1 00 . 0 , 0 2 2 00 . 0 ,
0 3 3 00 . 0 , 0 4 4 00 . 0
Host computer send
Host computer sendHost computer send
Controller send
Controller send
Controller send
Continue to *1
Device
address
Identifier
Identifier
Channel
number
Data
Comma
Channel
number
*1
Space
Data
E
T
X
B
C
C
A
C
K
S
T
X
M 2 0 1 ......
E
T
X
B
C
C
E
O
T
Space
Controller send
......
......
......
E
O
T
0 0 M 1
S
T
X
M 1 0 1 1 00 . 0 , 0 2 2 00 . 0
0
,
4 4 00 . 0
E
T
X
Host computer send
Host computer send
Controller re-sendController send
Continue to *1
Device
address
Identifier
Identifier
Channel
number
Data
Comma
Channel
number
*1
Space
Data
B
C
C
N
A
K
S
T
X
M 1 0 1 0 01 . 0 ,
E
T
X
B
C
C
Host computer send
E
O
T
Error dataE
N
Q
Space