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7. How to use the communication interface
Control command
remote
Purpose
Confirmation of the remote operation state.
Description
BF500 sends the present remote operation state after an echo back when it
receives this command from the host. The echo back and the transmission data
are as follows:
Remote <CR> <LF>
N <CR> <LF>
n
：
0
：
Remote operation stopped
01>
1
：
Remote operation activated
-1
：
Communication lock out
Caution
Remote operation is not available while communication is locked out.
Communication lock out can be cancelled only on the operation panel of the main
unit. See “Communication lock out function” on page 35 of this document for
details.
Remote_n (The underbar “_” means a space)
Purpose
Switching of a remote operation state.
Parameter
n where n means either of the following:
1
：
Remote operation start
0
：
Remote operation stop
Description
BF500 sends an echo back and the ID prompt when it receives this command and
starts operation at the remotely set temperature when n is 1 unless BF500 is in a
trouble state from which automatic recovery is not possible or in the
communication lock out state. When n is 0, remote operation immediately stops.
The echo back and the transmission data are as follows:
Remote_n <CR> <LF>
01>
(The underbar “_” means a space.)
Caution
The remote operation start command will be accepted as long as BF500 is in a
state other than a trouble state from which automatic recovery is not possible or in
the communication lock out state. BF500 stops, for example, program operation
when it receives this command during that operation and starts remote operation
at the remotely set target temperature and the pump speed at that time. Remotely
set the target temperature and the pump speed using the target temperature
setting command and the pump speed setting command described below before
issuing a remote operation start command.
