Electrical Specifications; Pin Assignments - TC Communications TC2100 User Manual

Electrical Specifications

The electrical signal interface for the TC2100 can be RS-232, RS-422, or RS-485 (2 or 4-wire) DCE (unless
factory configured as DTE). The data rate is Asynchronous DC (with control) up to 38.4Kbps (or two Async
channels without control). Data flow is controlled by XON/XOFF and RTS/CTS. The electrical connector
is DB25 Female.

Pin Assignments

The electrical signal interface is connected to the host or RTU via a DB25 female connector at the rear panel
of the TC2100. The RS-232 (DTE & DCE) and RS-422/485 DB25 pin assignments are as illustrated in the
diagrams that follow.
For units with an RS-232 interface, two separate channels are provided for handshaking signals or
connection of an additional device (this additional channel is not present on Multi-Master units). Pins 2 &
4 are inputs while pins 3 & 5 are outputs.
DB25 Female
(DCE)
Tx Data 2
Rx Data 3
RTS 4
to DTE device
CTS 5
1
FRM GND
7
SIG GND
TC2100
Figure 13. RS-232 Pin Assignments
- 14 -
DB25 Female
(DTE)
Tx Data 2
Rx Data 3
RTS 4
CTS 5
to DCE device
1
FRM GND
7
SIG GND
TC2100 DM
User's Manual
Ver. 1.6
TC2100
MNL-21000-01-16