Machine FG_04

FG_04 in TwinCAT

This page is generated from the machine handoff and the TwinCAT solution. Published from _docs/context/fg-04.md — edit it there, not here. Changes made in the wiki are overwritten on the next sync.

The control side only. What FG_04 is - its scene hierarchy, its devices and everything a human authored about it - is in the main repo: FG_04.

Twin PLC path	MAIN.FG_04
Control PLC path	MAIN.Machine.FG_04
Module	FG_04 EXTENDS FB_PackML_BaseModule
Served by	Index04 (FG_Transport)
Devices	2
Behaviour	fg-04-behaviour.md

Components

Symbol	Device type	Twin FB	Control PLC path	I/O	Linked
B_NIO	SignalBinary	FB_SensorBinary	MAIN.Machine.FG_04.B_NIO	1	1
Y_AxisZ	Cylinder	FB_Cylinder	MAIN.Machine.FG_04.Y_AxisZ	4	4

The twin path is not the control path. Only the control PLC path works in an HMI binding or a TcLinkTo pragma, and the twin's spelling fails silently in both.

SIM_1

POU	TwinCAT_1/PLC/SIM_1/FG_04/FG_04.TcPOU
In .plcproj	yes
Mapping targets	GVL_EtherCAT_1_SIM
Mapping lines	5

Only the Mapping action is ours. The {region generated code} block belongs to OC Assistant and is overwritten on the next twin regeneration.

PLC_1

POU	TwinCAT_1/PLC/PLC_1/Modules/14 FG_04/FG_04.TcPOU
In .plcproj	yes
PackML states	Execute, Aborting, Clearing, Stopping, Resetting
Fault codes	1
HMI struct	ST_HMI_FG_04

Fault codes are read from _FaultCode := in the ST. What each one means is behaviour and lives in the reference page named in the header.

Mapping

Process image member	Dir	Terminal	Via
B_NIO.HardwareInput	IN	FG_04_EL1008_1 channel 3	Mapping_PLC.xml
Y_AxisZ.ExtendedSensor	IN	FG_04_EL1008_1 channel 1	Mapping_PLC.xml
Y_AxisZ.RetractedSensor	IN	FG_04_EL1008_1 channel 2	Mapping_PLC.xml
Y_AxisZ._ExtendOutput	OUT	FG_04_EL2008_1 channel 1	Mapping_PLC.xml
Y_AxisZ._RetractOutput	OUT	FG_04_EL2008_1 channel 2	Mapping_PLC.xml

5 members, 5 linked, 0 unlinked. A declared but unlinked signal compiles and is silently dead - see plc-io.md for the channel map and plc-io-exceptions.md for the ones that are unlinked on purpose.