Specifications

3. Special Devices
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3-1
3.1. Special Auxiliary Relays
Ϩʳ
PLC Operation Status
Ϩʳ
Step Ladder Diagram
M1122 Sending request
M1000
Normally ON contact (a contact) M1040 Step transition inhibit M1123 Receiving completed
M1001
Normally OFF contact (b contact) M1041 Step transition start M1124 Receiving wait
M1002
ON only for 1 scan after RUN M1042 Start pulse M1125 Communication reset
M1003
OFF only for 1 scan after RUN M1043 Origin reset completed M1126 STX/ETX selection
M1004
On when error occurs M1044 Origin condition M1127
MODRD, RDST commands. Data receiving
completed
M1008
Monitor timer flag (ON: PLC WDT time out) M1045 All outputs clear inhibit M1128 Transmitting / Receiving indication
M1009
24VDC down detection
M1046
STL state setting M1129 Receiving time out
M1010 PLSY Y0 mode selection. ON: output continuously M1047 STL monitor enable M1130 STX/ETX selection
Ϩʳ Clocks Ϩʳ Interrupt Inhibit Setting
M1131
M1131=On during the conversion
( MODRD/RDST/MODRW data->HEX).
M1011
10msec clock M1050 I 001 masked
M1140
MODRD / MODWR data received error
M1012
100msec clock M1051 I 101 masked
M1141
MODRD / MODWR command error
M1013
1sec clock M1052 I 201 masked
M1142
VFD-A command data received error
M1014
1min clock M1053 I 301 masked M1143 ASCII / RTU mode selections
Ϩʳ Flags Ϩʳ Error Flags M1161 8/16-bit mode setting
M1019
Cancel X0~X17 input delay
M1060
CPU hardware error Ϩʳ High Speed Counter (1-phase input)
M1020
Zero flag
M1061
CPU internal malfunction (Flag) M1235 C235 counting mode (on: count down)
M1021
Borrow flag
M1062
CPU internal malfunction (BIOS) M1236 C236 counting mode (on: count down)
M1022
Carry flag
M1063
CPU internal malfunction (RAM) M1237 C237 counting mode (on: count down)
M1023 PLSY Y1 mode selection. ON: output continuously
M1064
Operator error M1238 C238 counting mode (on: count down)
M1024
System used
M1065
Syntax error M1241 C241 counting mode (on: count down)
M1025
Invalid communication request
M1066
Program error M1242 C242 counting mode (on: count down)
M1028 10ms time base setting flag
M1067
Program execution error M1244 C244 counting mode (on: count down)
M1029
PLSY Y0 Instruction execution completed flag
M1068
Execution error latch (ref. D1068) Ϩʳ High Speed Counter (1-phase 2 inputs)
M1030
PLSY Y1 Instruction execution completed flag
Ϩʳ
PLC Operation Execution
M1246
C246 monitor (on: count down)
M1072 PLC RUN command execution
M1247
C247 monitor (on: count down)
M1070
The Pulse unit switching (ON: 100 Ӵs) will be
conducted at the PWM command. M1073 Grammar inspection flag
M1249
C249 monitor (on: count down)
M1078 Y0 pulse output/stop control flag
Ϩʳ
High Speed Counter (2-phase inputs)
M1031 Non-holding memory all clear M1079 Y1 pulse output/stop control flag
M1251
C251 monitor (on: count down)
M1032 Holding memory all clear M1083 From / To mode exchange
M1252
C252 monitor (on: count down)
M1033 Memory holding at STOP
Ϩʳ
RS-485 Communication
M1254
C254 monitor (on: count down)
M1034 All outputs disable M1120 Communication protocol holding
M1039 Constant scan mode
M1121
Transmission ready