2 reading parameters, Command/response, Example – Yokogawa JUXTA M Series Digital Limit Alarms MVTK User Manual
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<4. Ladder Communication >
4-3
IM 77J04J11-01E 1st Edition : 2006.08.25-00
4.2.2
Reading Parameters
Shown below are the configurations of commands and responses when parameters in the
M Series are read by the PLC. (The maximum number of data items to be read is 64.)
●
Command/Response
Data of parameter number (n)
Data of parameter number (a)
Data of parameter number (b)
Number of Bytes
1
1
2
2
1
1
1
1
Number of BCD Digits
2
2
1
4
4
2
2
1
1
1
Command element
Address
number
(ADR)
Parameter
number
CPU
number
01
CR
(0D)
LF
(0A)
0
0
0
0
Number of
read data
(n)
2
1
1
1
1
1
4
2
2
1
1
1
CR
(0D)
LF
(0A)
0
0
+/-
0
ddddn
Number of Bytes
1
1
2
Number of BCD Digits
2
2
4
Response element
Address
number
(ADR)
Parameter
number
CPU
number
01
2
1
1
1
4
1
1
1
0
0
+/-
0
dddd1
2
1
1
1
4
1
1
1
0
0
+/-
0
dddd2
• • •
• • •
●
Example:
Reading the input value (D0003) of the M Series with address number 01.
[Command]
01010003000000010D0A
The input value 500 (BCD code) is returned with respect to the above command (50.0 is
expressed as 500).
[Response]
01010003000005000D0A