Yokogawa JUXTA VJ Series Limit Alarms - Manual (Page 21)

<3. PC Link Communication >
3-7
IM 77J01J11-01E
3.2.3 BRR Reading I Relays on a Bit-by-bit Basis in a Random
Order
●
Function
Reads the ON/OFF statuses of I relays by the specified number of bits in a random order.
• The number of bits to be read at a time is 1 to 32.
• 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 5 1 5 1
Command
Element
STX Address
number
(ADDRESS)
CPU
number
01
0 BRR Number
of bits
(n)
I relay
number 1
Comma
or space
I relay
number 2
Comma
or space
• • • I relay
number n
Checksum ETX CR
• • • 5 2 1 1
Number of Bytes • • • 1 1 2 2 2 1 1 2 1 1
Response
Element
STX Address
number
(ADDRESS)
CPU
number
01
OK d1 d2 CR • • • dn Checksum ETX
The response is “0” when the status is OFF or “1” when ON.
Command (continued)
dn: reads data of the specified number of bits (n=1 to 32)
dn=0(OFF)
dn=1(ON)
030209E.EPS
●
Example:
Reading the statuses of alarms-1 and -2 of the VJ Series signal conditioner with communi-
cation address-1
The following command reads the statuses of alarm-1 (I0009) and alarm-2 (I0010) at
communication address-1.
[Command]
[STX]01010BRR02I0009,I001082[ETX][CR]
With respect to the above command, the ON and OFF responses are returned for alarms-1
and -2 respectively.
[Response]
[STX]0101OK10BD[ETX][CR]
Alarm-1 has been ON.
030210E.EPS
3rd Edition : Oct. 15, 2007-00