Vektek Guardian 2.0 User Manual page 21

Vektek Guardian™ 2.0 User's Guide
Figure 25: PALLET ID BINARY LOGIC
M8 – 3 Pin Connector Wiring (For RS-232)
The RS-232 Serial Interface provides an interface for the Guardian System to communicate to the
machine controller, pallet handling system or automation controller to wireless identify which pallet is
being read in the working area. The Guardian System reads through wireless technology all the Fixture
Transmitter Units (FTU) in range and will use an internal algorithm to determine which reporting unit is
closest to the Pallet ID Reader that has been mounted in the working area. Then depending on the
users selection in Settings in the Master Control Unit (MCU), the FTU factory unique number will be sent
over the serial communications port. Either based on time, operational state or via a serial command
sent to the MCU from the Machine Controller.
Software Settings
The Master Control Unit(MCU) determines the operation of the optional Serial Communications port
feature. This is done through the system settings menu selections as described in Figure 63.
There are 4 possible modes of operation:
Mode 0: All Serial output and input monitoring is ignored.
Mode 1: Every time the MCU detects an FTU with good pressure, the unique serial number of the FTU is
sent out the Serial Communications Port.
Mode 2: Every 3-5 seconds the MCU sends out the FTU that has been detected as the closest FTU to the
MTR as defined by the internal algorithm. The message will be sent with no less than 3 seconds and no
more than 5 seconds depending on other internal tasks to the MCU system with higher priorities.
Mode 3: When the MCU receives a message on the Receive pin of the communications port that
matches the Request format, the MCU will reply with the FTU that has been detected as the closest FTU
to the MTR as defined by the internal algorithm.
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