D-96
FX Series PLC User's Manual - Data Communication Edition
Computer Link
9 Related Data
9.2 Details of Related Devices
9.2.10 On-demand data head device number specification [D8127 and D8427]
These devices set the head data register device number containing the data to be sent using the on-demand
function in a sequence program.
1. Detailed contents
These devices set the head data register device number containing the data to be sent using the on-demand
function.
In all PLCs except FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs and in FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs using
the communication port, use D8127.
For FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs using the communication port ch1, use D8127.
In FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs using the communication port ch2, use D8427.
If there is an error in the set data, the on-demand error flag (M8128 or M8428) turns ON.
2. Cautions on use
When setting the on-demand data head device number specification device (D8127 or D8427), set the flag
using the pulse operation type.
While the on-demand send processing flag (M8127 or M8427) is ON, do not write data.
9.2.11 On-demand data quantity specification [D8128 and D8428]
These devices set the amount of data to be sent from a PLC using the on-demand function in a sequence
program.
1. Detailed contents
These devices set the amount of data to be sent using the on-demand function. Set the amount of data 64 or
less.
In all PLCs except FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs using the communication port, use D8128.
For FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs using the communication port ch1, use D8128.
In FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs using the communication port ch2, use D8428.
If an error is included in the set data, the on-demand error flag (M8128 or M8428) turns ON.
2. Cautions on use
When setting the on-demand data quantity specification device (D8128 or D8428), set the flag using the pulse
operation type.
While the on-demand send processing flag (M8127 or M8427) is ON, do not write data.
Summary of Contents for FX-485ADP
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Page 120: ...B 2 FX Series PLC User s Manual Data Communication Edition N N Network ...
Page 188: ...C 2 FX Series PLC User s Manual Data Communication Edition Parallel Link ...
Page 244: ...D 2 FX Series PLC User s Manual Data Communication Edition Computer Link ...
Page 344: ...E 2 FX Series PLC User s Manual Data Communication Edition Inverter Communication ...
Page 700: ...H 2 FX Series PLC User s Manual Data Communication Edition Programming Communication ...
Page 752: ...I 2 FX Series PLC User s Manual Data Communication Edition Remote Maintenance ...
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