Download Manual

*RS422 - Main Port {P1}
1 CTS - output
6 CTS+ output
2 Transmit Data - output
7 Transmit+ output
3 Receive Data - input
8 Receive+ input
4 RTS - input
9 RTS+ input
5 Ground
*RS422 - Auxiliary Port {P2}
1 CTS - input
6 CTS+ input
2 Receive Data - input
7 Receive+ input
3 Transmit Data - output
8 Transmit+ output
4 RTS - output
9 RTS+ output
5 Ground
*Default configuration is RS232. RS422 configuration available by factory.
Configuration
Configure your PC for 8-bit data, one start-bit, one stop-bit, full duplex and no parity. The baud rate
for the RS232 communication can be selected by setting the proper switch configuration on the front
panel according to the table below.
Baud Rate Selection
Switch Setting
Interpretation
1200
9600
19.2K
ON
ON
OFF
300 Baud rate
ON
OFF
OFF
1200 Baud rate
ON
OFF
ON
4800 Baud rate
OFF
ON
OFF
9600 Baud rate
OFF
OFF
ON
19200 Baud rate
OFF
ON
ON
38400 Baud
ON
ON
ON
SELF TEST
The RS232 main port can be configured for handshake or non-handshake mode. Set the HSHK
switch to ON to select the handshake mode. In this mode, the RTS and CTS lines are used. The CTS
line will go high whenever the DMC-1500 is not ready to receive additional characters. The RTS line
will inhibit the DMC-1500 from sending additional characters. Note, the RTS line goes high for
inhibit. The handshake should be turned on to ensure proper communication especially at higher
baud rates.
The auxiliary port of the DMC-1500 can be configured either as a general port or for the daisy-chain.
When configured as a general port, the port can be commanded to send ASCII messages to another
DMC-1500 controller or to a display terminal or panel.
(Configure Communication ) at port 2. The command is in the format of:
CC m,n,r,p
34 • Chapter 4 Communication
User Manual DMC-1500