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Definition of Problem
Materials needed per operation:
- (1) WAGO® Ethernet PFC (750-842)
- (1) WAGO® 4 Point, 24VDC Digital Input (750-402)
- (1) WAGO® 4 Point, 24VDC Digital Output (750-504)
- (1) WAGO® RS232 Serial Module (750-650)
- (1) WAGO® End Module (750-600)
- (1) WAGO® 24VDC, 2A Power Supply (787-912)
- (1) 24VDC Green/Red Light Tree
- (1) Barcode Scanner
Materials needed per system:
- (1) Personal Computer
- (1) I/Gear® 5.3 or later
- (1) WAGO® I/O-Pro 32 (759-332)
A given operation is experiencing significant quality issues as a
result of using incorrect components in an assembly.
Definition of Solution
At a given operation, a barcode scanner and a red/green light tree are
added as an interface to the operator to assist in component selection.
When the assembly enters into the operation, the operator will scan the
serial number barcode of the assembly followed by the part number barcode
of the component to be added. The system will perform a database lookup
and determine if the component and assembly match. If the selection is
valid, the green light will illuminate and tooling will be enabled for
the assembly. If the selection is invalid, the red light will illuminate
to inform the operator that a different component is required. Once the
assembly leaves the operation, the tooling will be disabled.
WAGO® PFC Program Overview
Three retentive strings are created; one for the serial number, one
for the actual component and one for the required component. When a
barcode is scanned, it is placed in a respective string. When the lookup
is complete, if the component strings match, the green light is
illuminated and the tooling relay is energized. If the component
strings do not match, the red light is illuminated and the strings
are cleared for the process to restart. When an input indicates that
the assembly has traveled out of the operation, the strings are cleared,
the tooling is disabled and the lights are extinguished.
I/Gear® Configuration Overview
- A WAGO® DataLink input command, which executes every second, is created to grab the serial number string and return it to a datapoint.
- A database DataLink input command, which executes when the serial number datapoint value changes, is created to grab the required part number string and return it to a datapoint.
- A WAGO® DataLink output command, which executes when the required part number string refreshes, is created to write the required part number string to the PFC.
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WAGO is a registered trademark of WAGO Corporation.
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