3M Traffic Safety Systems 6204 Benutzerhandbuch

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Configuring Digital I/Os

3M Toll RFID Reader 6204

3M Toll RFID Reader 6204 User’s Guide

User’s Guide

8.4.2.

scan_trigger_timer.py

This routine monitors the I/O pin. When the pen goes high, the timer is started
and the operating mode is set to active. While the timer is running, I/O pin state
changes are ignored. When the timer expires, the operating mode is set to
standby. The minimum value for the timer is 10 milliseconds (ms).

Inputs: <pin> – (optional) Output pin number (1–4). Default is output 1.

<time> – (optional) Time, in ms for timer to run. Default is 1000 ms.

<trigger logic level> –(optional) 0 or 1. Default is trigger on 1.

Examples:

scan_trigger_timer.py

Monitors input 1, timer 1000 ms,
trigger on 1

scan_trigger_timer.py 2

Monitors input 2, timer 1000 ms,
trigger on 1

scan_trigger_timer.py 4 2000

Monitors input 4, timer 2000 ms,
trigger on 1

scan_trigger_timer.py 3 4000 0

Monitors digital input 3, timer 4000 ms,

trigger on 0

8.4.3.

signal_read.py

This routine will turn on a digital output if a tag is successfully read. The
optional output pin number can be specified on the command line. If not
specified, output pin 1 is used. The output pin will remain high for n ms, where
n is either the default of 1000 ms, or the value supplied on the command line.
Minimum value for n is 10 ms.

Inputs:

<pin> – (optional) Output pin number (1–4). Default is output 1.

<time> – (optional) Time, in ms, to keep the output high. Default is

1000 ms (1 sec).

<logic level> – (optional) Logic level for digital out On. 0 or 1. Default

is 1 (On).

Examples:

signal_read.py

Turns on output 1 for 1000 ms on tag reads

signal_read.py 2

Turns on output 2 for 1000 ms on tag reads

signal_read.py 1 5000

Turns on output 1 for 5000 ms on tag reads

signal_read.py 1 500

Turns on output 1 for 500 ms on tag reads

signal_read.py 1 800 0

Turns on digital output 1,logic level 0, for

800 ms on tag reads