© Microhard Systems Inc.
CONFIDENTIAL
21
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.
Содержание IP-921
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