Chapter 1
DTAM Plus OverView
1–6
Versions with Comm Port
The configurable communications port of the DTAM Plus supports RS-485
or RS-232. Use RS-485 to communicate with SLC processors over the
Allen-Bradley DH485 network as:
•
one of 32 nodes on a multidrop network
•
direct connection to a single SLC processor or the 1746-BAS module.
Communication via the 1746-BAS module provides direct backplane
access and faster data throughput.
Use RS-232 to communicate point-to-point DF1 to Channel 0 of the PLC-5
processors. You can also use RS-232 to download/upload DTAM Plus
application programs or to use the DTAM Plus in Terminal mode.
Comm Port Only
Printer Port
RS-232 Connector
(9 Pin Male)
Comm Port
RS-485 / RS-232
Connector (9 Pin Female)
Comm Port
RS-485 / RS-232 Connector
(9 Pin Female)
Power Connector
Power Connector
Comm Port
with Printer Port
The DTAM Plus supports the following parameters for RS-485 and RS-232C
communications:
RS-485 and RS-232
Communications Parameters
Options
Baud Rate
300, 1200, 2400, 4800, 9600, 19200, 38400
Data Bits
7 or 8
Parity
Odd, Even, None
The DTAM Plus supports RS-422 with a PLC-5 (DF1 protocol) when the
Comm port is set to RS-485.
DF1 Communications Parameters
Options
Protocol
DF1 Full-Duplex
Error Detect
CRC
BAUD Rate
300, 1200, 2400, 4800, 9600, 19200 (Default-9600)
Parity
None or Even (Default = Even)
Control Line Operation
No Handshaking
Stop Bits
1
Communication Ports
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