Yokogawa JUXTA VJ Series Limit Alarms - Manual (Page 23)

<3. PC Link Communication >
3-9
IM 77J01J11-01E
3.2.5 BRM Monitoring I Relays on a Bit-by-bit Basis
●
Function
Reads the ON/OFF statuses of I relays that have been specified in advance by the BRS
command.
• Before executing this command, the BRS command must always be executed to
specify which I relays are to be monitored. If no relay 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
Command
Element
STX 0 BRM ETX CR Address
number
(ADDRESS)
CPU
number
01
Checksum
• • • Number of Bytes 1 2 2 2 1 1 1 1 2 1 1
Response
Element
STX OK d1 d2 d3 ETX CR Address
number
(ADDRESS)
CPU
number
01
• • • dn Checksum
The response is “0” when the status is OFF or “1” when ON.
dn: registers data of the number of bits specified by the BRS command (n=1 to 32)
dn=0(OFF)
dn=1(ON)
030213E.EPS
●
Example:
When the burnout and alarms-1 and -2 of the VJ Series signal conditioner with communica-
tion address-1 have been specified to be monitored:
The following command monitors the statuses of burnout (I0004) and alarm-1 (I0009) and
alarm-2 (I0010) at communication address-1.
(This command reads the statuses of the I relays specified by the BRS command.)
[Command]
[STX]01010BRMA3[ETX][CR]
With respect to the above command, the ON and OFF statuses of the I relays are returned
as responses.
[Response]
[STX]0101OK000EC[ETX][CR]
All are in OFF statuses.
030214E.EPS
3rd Edition : Oct. 15, 2007-00