Port 1 and port 2 connectors – CTI Products NCB/EM with External PSTN Modem User Manual
Page 46
CTI Products, Inc.
NCB-EM User Guide
Appendix C. Connector Details
40
3 Pin Terminal Strip style:
Mating Connector:
Weidmuller 128186
Pin
Function
1
Network
2
Network
3
Shield (RS-485 only)
SMX Transceiver units:
SMX network connections are described in the documentation with the SMX
transceiver.
PORT 1 and PORT 2 Connectors
Connector type:
Standard DE9 male
Data Format:
8 data bits, 1 stop bit, no parity
Data Characteristics:
A series of bytes entering the “PORT 1” or “PORT 2
connecters must not have gaps between bytes greater than 500ms.
Handshaking:
Activating the DSR input signal informs the NCB unit that the channel is
active. If the channel does not directly support DSR, it must be strapped
back to the (always active) DTR output signal.
Flow Control:
CTS/RTS flow control can be used to pace the transmission of individual
bytes between the NCB and a connected device. Sensing of CTS by the
NCB can be enabled/disabled with the Option B switches. (See “S
”.)
Miscellaneous:
Pinout as DTE, arranged for direct connection to 25 pin connector using
standard 9 pin to 25 pin cable.
All signals must be connected for proper operation.
NCB Pin
Function
Direction
Modem Pin
1
DCD
Channel NCB
8
2
RXD
Channel NCB
3
3
TXD
NCB Channel
2
4
DTR
NCB Channel
20
5
ground
7
6
DSR
Channel NCB
6
7
RTS
NCB Channel
4
8
CTS
Channel NCB
5
9
RI
Channel NCB
22
NETWORK
1
2
3
C A - 8 0 0 8 5 - 1 0 0
NETWORK
2
1
PORT 1
1
2
3
4
6
7
8
9
5