Expanded sio specification (optional) – IAI America XSEL-KX User Manual
Page 301
285
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
Terminal assignments
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
12
In
RDB (RXD –)
Received data
13
In
TRM
Termination connection
14
Out
SDB (TXD –)
Transmitted data
15
Out
SDA (TXD +)
Transmitted data