Xenus XSL User Guide Operational Theory
Copley Controls Corp. 41
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. 54). For RS-232 port wiring instructions, see
RS-232 Serial Communications (J5) (p. 66).
In an RS-232 multi-drop configuration, a single amplifier with a serial connection to a
controller can act as a gateway, allowing the controller to access other (node) amplifiers
(interconnected by CAN bus connections) via the serial connection.
CME 2 can be used to make adjustments even when the amplifier is being controlled over
the CAN interface or by the digital inputs.
CAN interface When operating as a CAN node, the amplifier takes command inputs over a CANopen
network. CAN communications are described in the next section.
2.12.2: CME 2 and CAN Operation
When the amplifier is operated as a CAN 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 CAN node.
If CME 2 is used to initiate any movement (using the Control Panel Jog feature or a scope
function), the amplifier’s CANopen operations are suspended. When adjustments are complete,
CME 2 relinquishes control of the amplifier and returns it to the CAN node state.
Using CME 2 can affect or suspend CAN operations.
!
DANGER
When operating the amplifier as a CAN node, use of CME 2 to change amplifier
parameters can affect CAN operations in progress.
Using CME 2 to initiate motion can cause CAN 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.
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