Specifications

Table Of Contents

Controlling Multiplexer Operation

Software Configuration 29

Controlling Multiplexer Operation

The MUX Control system parameter (0x0A) operates the multiplexer.

Reading the value of the parameter returns

the type of multiplexer connected,

based on the device type code (Table 5-1).

Table 4-2 Dev

ice Type Values

Return Code SkyePlus Multiplexer SkyeModule Reader

01 MXH four-port M2

02 MXH eight-port M2

05 MHU four-port M7, M9

06 MHU eight-port M7, M9

00 No device detected —

Writing a value to the MUX Control system paramet

er lets you address different

ports on the multiplexer. The value provided in the data field corresponds

directly to the multiplexer port to address. For example, writing 0x05 in the data

field selects multiplexer port 5. All tag operations that follow occur on port 5

until the parameter is set to a different value.

Example: Detecting a Multiplexer

In the following example, the response data of 0x01 indicates a SkyePlus MXH

multiplexer is detected. (The example shows both ASCII and binary forms of the

command.)

Command = Read System Parameter

Mandatory Flags = (none)

Request (ASCII Mode)

Start Flags Command Address Number Blocks CRC End