Specifications

Chapter 7 - System Input/Output Module (SIO)
84 Adept MV Controller User’s Guide, Rev C
7.5 Serial I/O Connectors
There are three RS-232 serial ports for general-purpose serial I/O functions. These global
serial ports are referred to as devices
SERIAL:1
,
SERIAL:2
, and
SERIAL:3
. These serial ports
can be accessed, via the VMEbus, by any Adept system processor configured to run V
+
.
(There are also two additional local serial ports on the 030 and 040 modules.)
The connectors are DB-9P male 9-pin connectors that are pin-compatible with the serial
connector for AT compatible computers; the signal and pin information are shown in
Table 7-2 and Figure 7-1. The pinout for all three connectors is the same. (These three
connectors are identical to the RS-232/Term connector on the 030 module.) See Tables 5-3
through 5-7 for information on adaptor cables which may be required for some
connections.
See the V
+
Language User’s Guide for information on serial I/O. Also see the
ATTAC H
instruction in the V
+
Language Reference Guide for information on serial I/O programming.
Both of these manuals are optional and can be ordered from Adept. See the Instructions for
Adept Utility Programs for configuration information using the
CONFIG _C
program. All
three serial ports on the SIO module can be configured for use at up to 19,200 bps. Note:
for very intensive high-speed serial operation, it may be more efficient to use the serial
port(s) located on the system processor.
Figure 7-1. RS-232 Serial I/O Connector Pin Locations on SIO Module
Table 7-2. RS-232 Serial I/O Connector Pin Assignment on SIO Module
Pin Signal Name Pin Signal Name
1 not used 6 DSR (Data Set Ready)
2 RXD (From Device) 7 RTS (Request to Send)
3 TXD (To Device) 8 CTS (Clear to Send)
4 DTR (Data Terminal Ready) 9 not used
5 SG (Signal Ground)
Pin 1
Pin 5
Pin 6
Pin 9
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