Microhard Systems IP-921

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IP9xx Series

3.0 Hardware Features

3.1.2 Rear

Image 3B: Rear View of IP Series

COM1 Port (DCE) on the rear of the IP Series is used for RS232

serial data (300 baud to 230.4kbps) communications.

RS422/485 Port used to interface the IP Series to a DTE with the

same interface type (300 baud to 921kbps).

Either the RS232 or RS422/485 interface is used for ‗COM1‘ data

traffic.

Table 3B: COM1 (RS-232) Pin Assignment

Pin Name No. Description In/

Out

DCD 1 Data Carrier Detect O

RXD 2 Receive Data O

TXD 3 Transmit Data I

DTR 4 Data Terminal Ready I

SG 5 Signal Ground

DSR 6 Data Set Ready O

RTS 7 Request To Send I

CTS 8 Clear To Send O

See Appendix F for a full description of the COM1

RS-232 interface functions.

Microhard Systems IP-921 - Rear