User`s manual

3.3
Serial Interface Protocol
SETTING SERIAL COMMUNICATIONS MODE
The camera can use either an RS232 or an RS422/RS485 connection for serial
communication, but your host computer must have both RS232 and RS422/
RS485 communications capability to use this command.
Type In: Response Explanation
SCP 232 CR-LF Sets the camera serial port to respond to RS232 signals.
SCP 422 CR-LF Sets the camera serial port to respond to RS422 signals.
SCP? Queries the COM port setting.
SCP x Means the COM mode is set to x.
NOTE
RS422 and RS485 signal levels and connections are the same. Only two devices
can communicate using RS422 electronic driver circuits. Multiple devices can
be connected together using RS485 electronic driver circuits, as illustrated by
Multi-Drop on the next pages.
Procedure
Assuming you are using an RS232 connection, type in SCP 422. With power still
applied to the camera, disconnect the RS232 cable and substitute an RS422/RS485
connection. Type in SAV to lock in the RS422 option. The camera ignores the
SCP command if power is turned off before the SAV command is entered.