Expanded sio specification (optional) – IAI America XSEL-KE User Manual
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Appendix
Expanded SIO Specification (Optional)
Type
IA-105X-MW-A
(for RS232 connection)
IA-105X-MW-B
(for RS422 connection)
IA-105X-MW-C
(for RS485 connection)
(1) Specification
An SIO expansion board is a D-sub, 15-pin interface used for both RS232 and RS422 connection.
The terminal assignments allow selection of RS232, RS422 or RS485 in accordance with the
wiring. (The controller is shipped with a joint cable appropriate for the selected communication
method.)
Specifications
Item
Description
Connector
D-sub, 15-pin (male D-sub connector)
Connector name
CN3 connector
Maximum baud rate
115.2K
Maximum connection
distance
10M (RS232) / 600M (RS422)
38.4K (RS232C), 115.2K (RS422)
Interface standards
RS232 / RS422 / RS485
Communication method
Start-stop synchronous full/half-duplex communication
Character length
7/8 bits
Start bit
1 bit
Stop bit
1/2 bits
Parity
None, even, odd
Connection cable
Special 15-pin cable
1
Out
SD (TXD)
Transmitted data
2
In
RD (RXD)
Received data
3
Out
RS (RTS)
Request to send
4
In
CS (CTS)
Clear to send
5
Out
DR (DTR)
Equipment ready
6
In
ER (DSR)
Data set ready
7
SG
Signal
ground
8
N.C.
Not
used
9
N.C.
Not
used
10
N.C.
Not
used
11
In
RDA (RXD +)
Received data
,Q
5'%5;'±
Received data
13 In
TRM
Termination
connection
2XW
6'%7;'±
Transmitted data
Terminal assignments
15
Out
SDA (TXD +)
Transmitted data