YOKOGAWA UT150L, User Manual

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IM 05C01E22-10E
3-11
Chapter 3 PC Link Communication
BRS Specifies I relays to be monitored on a bit-by-bit basis.
●
Function
Specifies the numbers of I relays to be monitored on a bit-by-bit basis. Note that this command simply
specifies I relays. Actual monitoring is performed by the BRM command after the I relay numbers are
specified.
When the volume of data is large and you wish to increase the communication rate, it is effective to
use a combination of the BRS and BRM commands rather than the BRD command.
• The number of registers to be specified at a time is 1 to 16.
• 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
Command
element
1
STX
2
Address
number
(ADR)
5
I relay
number
1
2
Number
of bits
(n)
1
Comma
or space
1
Comma
or space
3
I relay
number
2
2
CPU
number
01
3
BRS
1
0
Number of
Bytes
Response
element
1
STX
2
Address
number
(ADR)
2
CPU
number
01
2
OK
…
…
2
Checksum
2
Checksum
5
I relay
number
n
1
ETX
1
CR
1
ETX
1
CR
Command (continued)
●
Example: Monitoring the PV burnout status of the UT150L with address number 05
The following command monitors the PV burnout status (I0007) at address number 05.
(This command is used for simply specifying registers.)
[Command] STX$+ “05010BRS01I00074D” +ETX$+CR$
“OK” is returned as the response to the above command.
[Response] STX$+ “0501OK60” +ETX$+CR$