User guide
Chapter 2. Communication
71
Setup for 6000
Language or
RP240
To configure the COM ports for use with 6000 language commands or an RP240, use the
DRPCHK command. The DRPCHK command affects the COM port selected with the last
PORT command. The default for COM1 is DRPCHKØ; the default for COM2 is DRPCHK3.
The DRPCHK setting is automatically saved in non-volatile memory. NOTE: Only one COM
port may be set to DRPCHK2 or DRPCHK3 at any given time.
DRPCHKØ ..... Use the COM port for 6000 language commands only. This is the default
setting for COM1, and if using RS-485 half duplex on COM2. Power-up
messages appear on all ports set to DRPCHKØ.
DRPCHK1 ..... Check for the presence of an RP240 at power-up/reset. If an RP240 is
present, initialize the RP240. If an RP240 is not present, use the port only
for 6000 language commands. NOTE: RP240 commands will be sent at
power-up and reset.
DRPCHK2 ..... Check for the presence of an RP240 every 5-6 seconds. If an RP240 is
plugged in, initialize the RP240.
DRPCHK3 ..... Check for the presence of an RP240 at power-up/reset. If an RP240 is
present, the initialize the RP240. If an RP240 is not present, use the COM
port for DWRITE commands only, and ignore received characters. This is the
default setting for COM2, unless you are using RS-485 multi-drop
communication (in which case the default changes to DRPCHKØ).
RS-485 compatible products: If you are using RS-485 communication in a multi-drop
(requires you to change an internal jumper to select half duplex), the default setting for COM2
is DRPCHKØ. If the internal jumper setting is left at full duplex, the default setting for
COM2 is DRPCHK3.
Selecting a Destination Port for Transmitting from the Controller
To define the port (COM port) through which the 6000 product sends its responses, you have
3 options:
• Do nothing different. The response will be sent to the COM port through which the
request was made. If the command is in a stored program, the report will be sent to the
COM port selected by the most recent PORT command.
• Prefix the command with [. This causes the response to be sent to both COM ports.
(e.g., the [TFS command response will be sent through both COM ports)
• Prefix the command with ]. This causes the response to be sent to the alternative COM
port. For example, if a report back (e.g., ]TAS) is requested from COM1, the response
is sent through COM2. If the command is in a stored program, the report will be sent
out the alternate port from the one selected by the most recent PORT command.