RKC INSTRUMENT COM-ML, Instruction Manual

Page: 127 / 152

APPENDIX. HOST COMMUNICATION PROTOCOL
IMR02E20-E1 117

Polling procedure example (When the host computer requests data)

Normal transmission
E
O
T
0 1 K 1 S 1
E
N
Q
A
C
K
04H 30H 31H 4BH 31H 53H 31H 05H 06H
S
T
X
S 1 0 0 1 4 0 0 . 0 ,

E
T
B B
C
C
02H 53H 31H 30H 30H 31H 20H 20H 20H 34H 30H 30H 2EH 30H 2CH 17H
A
C
K
06H
S
T
X 0 1 1 8 0 0 . 0 , 0 1

E
T
X B
C
C
02H 30H 31H 31H 20H 20H 20H 38H 30H 30H 2EH 30H 2CH 30H 31H 03H
E
O
T
04H
S
T
X P 1 0 0 1

E
T
B B
C
C
02H 50H 31H 30H 30H 31H 20H 17H

Error transmission
E
O
T
0 1 K 1 S 1
E
N
Q
N
A
K
04H 30H 31H 4BH 31H 53H 31H 05H 15H
S
T
X
S 1 0 0 1 4 0 0 . 0

E
T
B B
C
C
02H 53H 31H 30H 30H 31H 20H 20H 34H 30H 30H 2EH 30H 17H
E
O
T
04H
S
T
X S 1 0 0 1 4 0 0 . 0 ,

E
T
B B
C
C
02H 53H 31H 30H 30H 31H 20H 20H 20H 34H 30H 30H 2EH 30H 2CH 17H
*2
Host computer send
*1
Host computer send
SRZ unit send
Continue
to *2
Channel No.
SRZ unit send
Host computer send Host computer send
Continue
to *1
Address Memory
area
number
Identifier
SRZ unit send
Channel No. Identifier Data
Data
*1
Host computer send
SRZ unit resend
Host computer send Host computer send
SRZ unit send
Identifier Channel No. Data
Error data
Continue
to *1
Address Memory
area
number
Identifier