User guide

Xenus XTL User Guide Operational Theory
Copley Controls Corp. 31
2.12: Communication
2.12.1: Communication Interfaces
As described below, the amplifier features two communication interfaces, each used for different
purposes.
Interface Description
RS-232 port The amplifier features a three-wire RS-232 port. CME 2 software communicates with the
amplifier using a binary protocol over this link for commissioning, adjustments, and
diagnostics. In addition, ASCII commands can be issued over the serial port. For RS-232
port specifications, see Serial Interface (p. 41). For RS-232 port wiring instructions, see
RS-232 Serial Communications (J5) (p. 53).
In an RS-232 multi-drop configuration, a single amplifier with a serial connection to a
controller can act as a gateway. Through the gateway amplifier, the controller can use the
serial connection to access other amplifiers on the CAN bus.
CME 2 can be used over a direct RS-232 connection to make adjustments and monitor
operations even when the amplifier is being controlled over the CAN interface or by the
digital inputs.
CAN interface When operating as a CANopen or DeviceNet node, the amplifier takes input commands
over a CAN bus. CAN communications are described in CME 2 and CAN Operation (p.
31). DeviceNet is described in the Copley DeviceNet Programmer’s Guide.
2.12.2: CME 2 and CAN Operation
When the amplifier is operated as a CANopen or DeviceNet node, CME 2 can be used for
programming before and after installation in a CAN network.
CME 2 can also monitor operations while the amplifier is operating as a CANopen or DeviceNet
node.
If CME 2 is used to initiate any movement (using the Control Panel Jog feature or a scope
function), the amplifier’s CANopen or DeviceNet operations are suspended. When adjustments
are complete, CME 2 relinquishes returns the amplifier to the CANopen or DeviceNet node state.
Using CME 2 can affect or suspend CAN operations.
!
DANGER
When operating the amplifier as a CANopen or DeviceNet node, use of CME 2 to
change amplifier parameters can affect CANopen or DeviceNet operations in
progress.
Using CME 2 to initiate motion can cause CANopen operations to suspend. The
operations may restart unexpectedly when the CME 2 move is stopped.
Failure to heed this warning can cause equipment damage, injury, or death.