Yokogawa JUXTA M Series Digital Limit Alarms MVTK - Manual (Page 22)

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<Toc> <Ind> <3. PC Link Communication >
IM 77J04J11-01E 1st Edition : 2006.08.25-00
BWR Writes data into I relays on a bit-by-bit basis
●
Function
Writes ON/OFF data into a sequence of contiguous I relays by the specified number of bits,
starting at a specified I relay number.
• The number of bits to be written into at a time is 1 to 256.
• 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 checksum, do not include the 2-byte
checksum element in the command.
●
Command/Response (for normal operation)
Command
element
STX Address
number
(ADR)
CPU
number
01
0 BWR d1 d2 I relay
number
Comma
or space
Number
of bits
(n)
Comma
or space
• • • dn Checksum ETX
Write data 0 and 1 indicate OFF and ON respectively.
Command (continued)
• • • 1 2 1
CR
1
OK ETX CR Response
element
STX Address
number
(ADR)
CPU
number
01
Checksum
Number of Bytes 1 2 2 2 2 1 1
Number of Bytes 1 2 2 1 3 5 1 3 2 1 1
dn: write data of the specified number of bits (n=1 to 256)
dn=0 (OFF)
dn=1 (ON)
●
Example:
Setting the user-defined flag of the M Series with address number 01 to ON.
The following command writes ON into the user-defined flag (I0033) of address number 01.
[Command]
[STX]01010BWRI0033,001,106[ETX][CR]
Note: The user-defined flags are flags that the user can freely read/write.
OK is returned in response to the above command.
[Response]
[STX]0101OK5C[ETX][CR]