Chapter 8 Programming; Precautions On Programming - Mitsubishi Electric MELSEC iQ-F FX55-ASL-M User Manual

8
PROGRAMMING
This chapter describes programming and start-up examples of the FX5-ASL-M.
8.1

Precautions on Programming

This section describes precautions on programming on the FX5-ASL-M.
Interlock program of automatic address detection
The interlock program described here prevents 'Automatic address detection command' (Un\G27 b1) from being turned on
*1
during a parameter access
The following shows an interlock program in which the start module number of the FX5-ASL-M is assigned to 0001H.
*1 Indicates that 'Parameter access completion flag' (Un\G28 b9) is off or 'Automatic address detection flag' (Un\G28 b11) is on.
Ex.
Interlock example
Classification Label name
Module label FX5ASLM_1.bModuleREADY_D
FX5ASLM_1.bDP_DNShortError_D
FX5ASLM_1.b24V_DPShortError_D
FX5ASLM_1.bTransmissionCableVoltageDdropError_D
FX5ASLM_1.bPalameterAccessCompletionFlag_D
FX5ASLM_1.bAutomaticAddressDetectionFlag_D
FX5ASLM_1.bOverlapAddressInspectionFlag_D
FX5ASLM_1.bAutomaticAdrressDetectionCommand_D
Label to be defined Define global labels as shown below:
or during automatic address detection
*1
, allowing proper automatic address detection.
Description
Module READY
DP/DN short error
24V/DP short error
Transmission cable voltage drop error
Parameter access completion flag
Automatic address detection flag
Overlap address inspection flag
Automatic address detection command
8.1 Precautions on Programming
Device
U1\G28 b0
U1\G28 b1
U1\G28 b2
U1\G28 b3
U1\G28 b9
U1\G28 b11
U1\G28 b12
U1\G27 b1
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