Yokogawa JUXTA VJ Series Limit Alarms - Manual (Page 27)

<3. PC Link Communication >
3-13
IM 77J01J11-01E
3.2.9 WRM Monitoring D Registers/I Relays on a Word-by-word
Basis
●
Function
Reads the information of registers that have been specified in advance by the WRS com-
mand.
• Before executing this command, the WRS command must always be executed to
specify which registers are to be monitored. If no register has been specified, error
code 06 is generated.
• For the format of response in the event of failure, see subsection 3.1.2.
• The command shown below includes the checksum function. When performing
communication without a checksum, do not include the 2-byte checksum command
element in the command.
●
Command/Response (for normal operation)
Number of Bytes 1 2 2 1 3 2 1 1
Number of Bytes • • • 1 2 2 2 4 4 4 2 1 1
Command
Element
STX Address
number
(ADDRESS)
CPU
number
01
Checksum 0 WRM ETX CR
Response
Element
STX OK dddd1 dddd2 ETX CR Address
number
(ADDRESS)
CPU
number
01
• • • ddddn Checksum
The response is returned in a 4-digit character string (0000 to FFFF) in a hexadecimal pattern.
Reads data of the number of words specified by the WRS command
ddddn is a character string in a hexadecimal pattern.
n=1 to 32
030223E.EPS
●
Example:
When the input value (%) and output value (%) of the VJ Series signal conditioner with
communication address-1 have been specified to be monitored:
The following command monitors the input value (D0004) and output value (D0008) at
communication address-1.
(This command reads the registers specified by the WRS command.)
[Command]
[STX]01010WRME8[ETX][CR]
CPU number: 01
With respect to the above command, the input value 500 (01F4 (HEX)) and output value
500 (01F4 (HEX)) are returned as responses (50.0% is expressed as 500).
[Response]
[STX]0101OK01F401F412[ETX][CR]
3rd Edition : Oct. 15, 2007-00