Specifications

Table Of Contents

Communications with SkyeTek Protocol v2

Using a SkyePlus MXH with a SkyeModule M1 47

Communications with SkyeTek Protocol v2

This section describes how to use the Multiplexer Memory and the Multiplexer

system parameters to operate an external multiplexer. This information applies

to the SkyeModule M1 reader, which uses the SkyeTek Protocol v2 (STPv2).

Multiplexer Memory Parameter

The M1 supports reads and writes to the non-volatile (EEPROM) memory

parameter (0x09) to enable or disable multiplexer functionality.

● Setting the multiplexer memory parameter to 0x01 enables the multiplexer

and disables the user ports. In this state, you can write to the multiplexer

system parameter but not to the user port system parameters.

● Setting the multiplexer memory parameter to 0x00 disables the multiplexer

and enables the user ports. In this state, you cannot write to the multiplexer

system parameter, but you can write to the user port system parameters.

Multiplexer System Parameter

The Multiplexer system parameter (0x09) is a read/write system parameter that

contains a one-byte Device Type value and also controls the port-addressing

function of the multiplexer. The Multiplexer system parameter supports the

following two commands:

● Read System Parameter command

● Write System Parameter command

The Read System Parameter command (0x22) r

eturns the Device Type value, as

shown in Table D-2, and sets the default port on the m

ultiplexer to 0x00. If no

device is detected a value of 0x00 is returned.

Table D-2 Dev

ice Type Value

Return Code SkyePlus Multiplexer

01 MXH four-port

02 MXH eight-port

05 MHU four-port

06 MHU eight-port

00 No device detected