User Guide

Programming

AXB-PCCOM Communications Port Interface

Programming

Requests

 Enter the numeric value only; do not enter the brackets.

 Examples shown are in the Axcess programming language syntax.

 All values expressed in brackets are true decimal values.

 Replace the comma delimiter, as used in the examples, with the delimiter accepted by

your PC or RS-232 device. (Refer to your PC or device user's or reference guide.)

 The DEVICE value is not the AXlink device code. It is the value incremented from the

AXB-PCCOM DEVICE value, which should be 0. If you configure the AXB-PCCOM

for multiple devices, the successive device values will be 1, 2, and 3.

 Valid values for <LEVEL NO> are 0 through 7, and correspond to Axcess levels 1

through 8. (For example, 0 corresponds to 1, 1 corresponds to 2, and so on.)

CHECKSUM the sum of all bytes mod 256.

For the equation X mod Y = N, X is divided by Y, with the remainder being N.

 All examples are for an AXB-PCCOM set as AXlink device number 128, configured for

four devices

Request Commands

The following table lists the request commands sent to the AXB-PCCOM :

Requests sent to the AXB-PCCOM

Command Packet Structure and Example

DO Push/Release Syntax:

'*' <1> <DEVICE> <CHANNEL> <STATUS> <CHECKSUM>

"'*',1,0,1,1,45"

(Status Byte: 1 = Push; 0 = Release). Push channel 1 on device 0 (AXlink device

128).

Example:

"'*',1,3,255,0,45"

Release channel 255 on device 3 (AXlink device 131).

Get Bus Status Syntax:

'*' <8> <CHECKSUM>

Example:

"'*',8,50"

Request bus status. The AXB-PCCOM responds with a BUS STATUS string.

Get Channel Status Syntax:

'*' <6> <DEVICE> <CHANNEL> <CHECKSUM>

Example:

"'*',6,0,100,148"

Request the channel status for channel 100 on device 0 (AXlink device 128). The

AXB-PCCOM responds with a CHANNEL STATUS string.