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GEMTEQ I/O 4. GEMCAN I/O Scanner Configuration
4. GEMCAN I/O SCANNER CONFIGURATION
4.1 INTRODUCTION
This section describes the P-Table configuration data that is required to allow a GEMCAN I/O
Scanner module to take part in the data exchanges on a GEMCAN network, either as a Master or
as a Slave device.
4.2 GEMCAN I/O SCANNER CONFIGURATION DATA
The GEMCAN I/O Scanner module(s) configuration parameters must be entered into the
P-Table of the host GEM80 controller by the user before the module(s) can be used. These
parameters are read by the GEMCAN I/O Scanner on power-up and whenever a re-compile is
performed of the host controller.
For the GEMCAN I/O Scanner module(s) to access the configuration data successfully, a value
must be written into P73. This value acts as a pointer to the first P-Table location containing
GEMCAN I/O Scanner configuration data, e.g. if P73 contains a value of 500, configuration data
begins at P500. The user must ensure that there are sufficient “P” tables declared for the
configuration data.
Inserting a value of 0 into P73 renders inactive all GEMCAN I/O Scanner modules belonging to
the host controller.
A detailed description of each configuration parameter is provided in the following paragraphs.
Table 4-1 provides a reference table for the configuration data.
Table 4-1 P-Tables reserved for GEMCAN I/O Scanner Configuration Data
P-Table Value Description
P73 Pointer to the GEMCAN I/O Scanner Configuration
Data
Px @CAF1 Module 1: Validity Flag See 4.2.1
Px+1 Module 1, Port A : CAN Node ID See 4.2.2
Px+2 Module 1, Port A : Baud Rate See 4.2.3
Px+3 Module 1, Port A : Port Mode / Sub Mode See 4.2.4
Px+4 Module 1, Port A : Master C/O Time mS See 4.2.5
Px+5 Module 1, Port A : Max. Input Data Delay mS See 4.2.6
Px+6 Module 1, Port A : Max. Output Data Delay mS See 4.2.7
Px+7 Module 1, Port A : Split Offset (Must always be
zero) See 4.2.8
Px+8 Module 1, Port A : Sync Period mS See 4.2.9
Px+9 Module 1, Port A : Node Guard Period mS See 4.2.10
Px+10 Reserved
Px+11 Reserved
Px+12 Module 1, Port B : CAN Node ID See 4.2.2
Px+13 Module 1, Port B : Baud Rate See 4.2.3
Px+14 Module 1, Port B : Port Mode See 4.2.4
Px+15 Module 1, Port B : Master C/O Time mS See 4.2.5
Px+16 Module 1, Port B : Max. Input Data Delay mS See 4.2.6
GEMTEQ I/O Technical Manual (T2031En)
Rev.02 (10/10) Page 4-1