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2 • Chapter 4 Communication DMC-2X00
Chapter 4 Communication
Introduction
The DMC-2x00 has two RS232 ports, and either one USB input port and 2 USB output ports, or
Ethernet ports. The main RS-232 port is the data set and can be configured through the switches on the
front panel. The auxiliary RS-232 port is the data term and can be configured with the software
command CC. The auxiliary RS-232 port can be configured either for daisy chain operation (DMC-
2000 only) or as a general port. This configuration can be saved using the Burn (BN) instruction. The
RS232 ports also have a clock synchronizing line that allows synchronization of motion on more than
one controller.
RS232 Ports
The RS232 pin-out description for the main and auxiliary port is given below. Note that the auxiliary
port is essentially the same as the main port except inputs and outputs are reversed. The DMC-2x00
may also be configured by the factory for RS422. These pin-outs are also listed below.
NOTE: If you are connecting the RS232 auxiliary port to a terminal or any device which is a
DATASET, it is necessary to use a connector adapter, which changes a dataset to a dataterm. This
cable is also known as a 'null' modem cable.
RS232 - Main Port {P1} DATATERM
1 CTS – output 6 CTS - output
2 Transmit Data - output 7 RTS - input
3 Receive Data - input 8 CTS - output
4 RTS – input 9 No connect (Can connect to +5V or sample clock)
5 Ground
RS232 - Auxiliary Port {P2} DATASET
1 CTS – input 6 CTS - input
2 Transmit Data - input 7 RTS - output
3 Receive Data - output 8 CTS - input
4 RTS – output 9 5V (Can be connected to sample clock with jumpers)
5 Ground