4. COMMUNICATION PROTOCOL
IMSRM04-E8
32
4.2.2 Selecting procedure example
(When the host computer sends data)
The data (Input range, decimal point etc.) should be conformed to the specifications of the
instruments to be used. (Above example is with 1 digit below decimal point). The SR
Mini HG SYSTEM sends [NAK] if the receiving of different data to specification.
Normal transmission
E
O
T
0
0
0
1
S
T
X
S
1
0
1
4
0
0
.
0
…
E
T
X
B
C
C
04H 30H 30H 30H 31H 02H 53H 31H 30H 31H 20H 20H 34H 30H 30H 2EH 30H
03H 57H
A
C
K
06H
S
T
X
P
1
0
1
…
E
T
X
B
C
C
E
O
T
02H 50H 31H 30H 31H 20H
03H 49H
04H
A
C
K
06H
If error exists in data
E
O
T
0
0
0
1
S
T
X
S
1
0
1
4
0
0
.
0
…
E
T
X
B
C
C
04H 30H 30H 30H 31H 02H 53H 31H 30H 31H 20H 20H 34H 30H 30H 2EH 30H
03H 56H
N
A
K
15H
S
T
X
S
1
0
1
…
E
T
X
B
C
C
E
O
T
02H 53H 31H 30H 31H 20H
03H 57H
04H
A
C
K
06H
c
c
Host computer send
Host computer send
Host computer send
Host computer send
→
Continue to
c
→
Continue to
c
Data
Data
Channel No.
Channel No.
Send data
Send data
Next send data
Resend data
Host computer send
Host computer send
SR Mini SYSTEM send
SR Mini SYSTEM send
SR Mini SYSTEM send
SR Mini SYSTEM send
Identifier
Identifier
Operatio
n panel
address
*
Operatio
n panel
address
Selecting
dd
Selecting
dd
Unit
address
Unit
address
*Omit the operation panel address when the
connection is made directly to control unit.
