2 reading parameters – Yokogawa JUXTA VJ Series Limit Alarms User Manual
Page 39
<4. Ladder Communication >
4-3
IM 77J01J11-01E
4.2.2
Reading Parameters
Parameters from the PLC are read in the VJ Series signal conditioners in the following
configuration. (The maximum number of data items to be read is 64.)
040204E.EPS
Data of parameter no. (n)
Data of parameter no. (a)
Data of parameter no. (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
(ADDRESS)
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)
5th
digit
0
+/-
0
ddddn
Number of Bytes
1
1
2
Number of BCD Digits
2
2
4
Response Element
Address
number
(ADDRESS)
Parameter
number
CPU
number
01
2
1
1
1
4
1
1
1
5th
digit
0
+/-
0
dddd1
2
1
1
1
4
1
1
1
5th
digit
0
+/-
0
dddd2
• • •
• • •
●
Example of reading the output value (D register 0008) of the VJ Series
signal conditioner with communication address-1
[Command]
01010008000000010D0A
The output value 500 (BCD code) is returned as a response to the above command (50.0%
is expressed as 500).
[Response]
010100080000005000D0A
3rd Edition : Oct. 15, 2007-00