Hardware Handshaking - Allen-Bradley 1761-NET-AIC User Manual

34 Specifications and Dimensions
Publication 1761-UM004B-EN-P - June 2006
Isolation Between All Ports and Power Supply Terminals
RS-485 Communication
Port (Phoenix Plug)
RS-232 (DB-9, DTE)
Communication Port

Hardware Handshaking

To implement hardware handshaking, use cables that support the
following signals.
Signals Needed for Hardware Handshaking
Signal Definition
RTS active
CTS active
When hardware handshaking is used, the auto transmit delay
(turnaround time) is zero.
Protocol for Hardware Handshaking
Protocol
DF1 Full-duplex (point-to-point isolator)
DF1 Master-slave
User-mode ASCII
(1)
You can connect two DF1 Full-duplex devices together with one AIC+ interface converter.
(2)
Any communication coming off of the RS-485 line will not drive the carrier detect lines on the RS-232 (DB-9,
DTE) communication port and the RS-232 (8-pin mini-DIN) communication port. If the devices require carrier
detect high, it must be jumpered high locally at the device's RS-232 port. Devices on RS-232 (DB-9, DTE)
communication port and RS-232 (8-pin mini-DIN) communication port can drive the other RS-232 ports
handshaking lines and the RS-485 transmitter.
RS-232 (8-pin mini-DIN)
Communication Port
Terminals for external 24V dc power
supply and chassis ground.
Function
An input to AIC+ interface converter port.
An output from AIC+ interface converter
port.
AIC+ Interface Converter Support of
Hardware Handshaking
(1)
Yes
(2)
Yes
(2)
Yes