User Guide

Programming
11
AXB-PCCOM Communications Port Interface
Response Mask
If the AXB-PCCOM receives a change, it sends data automatically. Disable this feature if the data
is not used. Bits in the response mask will turn off the data.
 1 = ON Data sent
 0 = OFF Data not sent.
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".
Return/Requests sent to the AXB-PCCOM
Command Packet Structure and Example
Receive String Syntax:
'&' <3> <DEVICE> <# BYTES> <STRING> <CHECKSUM>
Example:
"'&',3,0,9,'AXB-PCCOM',172"
AXCESS sent the string 'AXB-PCCOM' to device 0 (AXlink device 128).
Response Mask for the AXB-PCCOM
Byte Bit Data Controlled Default
First byte (mask 1) 7 (msb) Receive String 1
6 Receive Channel 1
5 Channel Change 1
4 Level Change 1
3 Bus LED 0
2 (Reserved for Future use) 0
1 (Reserved for Future use) 0
0 (lsb) (Reserved for Future use) 0
Second byte (mask 2) 7 (msb) (Reserved for Future use) 0
6 (Reserved for Future use) 0
5 (Reserved for Future use) 0
4 (Reserved for Future use) 0
3 (Reserved for Future use) 0
2 (Reserved for Future use) 0
1 (Reserved for Future use) 0
0 (lsb) (Reserved for Future use) 0
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)).