Figure 3-11: Rs-232/422/485 Serial Port Connector Location; Table 3-11: Rs-232/422/485 Serial Port Connector Pinouts - IEI Technology ECW-281B-D525 User Manual

ECW-281B/B2-D525 Embedded System
communication channel but, with the COM6 function select jumper, can be configured as
either an RS-422 or RS-485 serial communications channel.

Figure 3-11: RS-232/422/485 Serial Port Connector Location

PIN NO. DESCRIPTION
1 NDCD
3 NRX
5 NTX
7 NDTR
9 GND
11 TXD422+/TXD485+
13 RXD422+

Table 3-11: RS-232/422/485 Serial Port Connector Pinouts

NOTE:
The RS-422/485 function is an optional choice of the ECW-281B-D525
Series. The COM6 connector on the rear panel of the standard
ECW-281B-D525 Series only provides RS-232 serial communication.
PIN NO. DESCRIPTION
2 NDSR2
4 NRTS2
6 NCTS2
8 NRI2
10 GND
12 TXD422-/TXD485-
14 RXD422-
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