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15
AXB-232++ RS-232/422/485 Interface
Reserved Channels
The following table lists the channels reserved on Device 0.
Axcess Master Mode
When an Axcess device is placed in "Master Mode", the Central Controller’s PROGRAM port is
moved to the Axcess device’s RS-232 port.
Press the escape key, then type either MC or MD:
<esc>MC - connects the device in Master Mode
<esc>MD - disconnects the device
where <esc> means "press the Esc key".
Reserved Channels
Channel Function
Channel 254 This is only valid within the device and is not sent to the AXlink Master. Reflects AXlink
status:
• When AXlink is active, this channel is on.
• When AXlink is inactive, this channel is off.
• When this channel changes state, the AXB-232++ generates a PUSH or RELEASE.
Channel 255 Reflects the state of the CTS input. If the AXB-232++ receives a 'CTSPSH' command,
it generates PUSHes for both the Master and the AXB-232++.
Master Mode can be very useful in situations where physical access to the Central
Controller’s PROGRAM port is not practical (for example, in installations where the
Central Controller is located a long distance from the bus device(s)).