2 Functions of Devices in DVP-PLC Example: If the COM1 communication interrupt I161 has been selected, the communication interrupts I150 and I163 can not be used. Although there is no such warning during the writing of a program, a warning message will appear after the program is downloaded to a PLC. 6. Frequency measurement card triggered interruption: I180: When the PLC sets up the frequency measurement card in mode 1 (pulse cycle measurement) and mode 3 (pulse number counting) by M1019 and D1034, I180 will be supported as well.
2.10 Special Auxiliary Relays and Special Data Registers The types and functions of special auxiliary relays (special M) and special data registers (special D) are listed in the table below. Please be noted that some devices of the same No. may bear different meanings in different series MPUs. Special M and special D marked with “*” will be further illustrated in the 2.11. Columns marked with “R” refers to “read only”, “R/W” refers to “read and write”, “-“ refers to the status remains unchanged and “#” refers to the system will set it up according to the status of the PLC.
DVP-PLC Application Manual 2-38 ES SA Off STOP RUN Special EH2 EH3 Function EX SX Attribute Latched Default M SV SV2 SS SC On RUN STOP M1000* Monitoring normally open contact (A) ○ ○ ○ ○ Off On Off R NO Off M1001* Monitoring normally closed contact (B) ○ ○ ○ ○ On Off On R NO On M1002* Enabling positive pulses (On when RUN) ○ ○ ○ ○ Off On Off R NO Off M1003* Enabling negative pulses (Off when RUN) ○ ○ ○ ○ On Off On R NO On M1004* On when syntax errors occur ○ ○ ○ ○ Off Off - R NO Off M1005* Password of data backup memory card and password of MPU do not match ╳ ╳ ○ ○ Off - - R NO Off M1006* Data backup memory card has not been initialized ╳ ╳ ○ ○ Off - - R NO Off M1007* Data do not exist in the program area of data backup memory card ╳ ╳ ○ ○ Off - - R NO Off M1008* Scanning watchdog timer (WDT) On ○ ○ ○ ○ Off Off - R NO Off M1009 Insufficient 24V DC supply, LV signal has been occurred.
○ ○ ○ ○ Off - - R NO Off M1010 ES/SA: PLSY Y0 mode selection, continuous output when On EH2/SV/EH3/SV2: Pulse output when reaching END instruction ○ ○ ○ ○ Off - - R/W NO Off M1011* 10ms clock pulse, 5ms On/5ms Off ○ ○ ○ ○ Off - - R NO Off M1012* 100ms clock pulse, 50ms On / 50ms Off ○ ○ ○ ○ Off - - R NO Off M1013* 1s clock pulse, 0.5s On / 0.5s Off ○ ○ ○ ○ Off - - R NO Off M1014* 1min clock pulse, 30s On / 30s Off ○ ○ ○ ○ Off - - R NO Off M1015* Enabling high-speed counter ╳ ○ ○ ○ Off - - R/W NO Off M1016* Displaying real time clock in A.D. ╳ ○ ○ ○ Off - - R/W NO Off M1017* ±30 seconds correction on real time clock ╳ ○ ○ ○ Off - - R/W NO Off M1018 Flag for radian/degree, On:
for degree ╳ ○ ○ ○ Off - - R/W NO Off M1019 Enabling frequency measurement card ╳ ╳ ○ ○ Off Off - R NO Off M1020 Zero flag ○ ○ ○ ○ Off - - R NO Off M1021 Borrow flag ○ ○ ○ ○ Off - - R NO Off M1022 Carry flag ○ ○ ○ ○ Off - - R NO Off M1023 PLSY Y1 mode selection, continuous output when On ○ ○ ╳ ╳ Off - - R/W NO Off M1024 Requesting COM1 monitoring ○ ○ ○ ○ Off - - R NO Off M1025* There is incorrect request for communication. ○ ○ ○ ○ Off - - R NO Off M1026 Enabling RAMP module ╳ ○ ○ ○ Off - - R/W NO Off M1027 Number of PR outputs ╳ ○ ○ ○ Off - - R/W NO Off M1028 10ms time switching flag. Off: time base of T64 ~ T126 = 100ms On: time base of T64 ~ T126 = 10ms ○ ╳ ╳ ╳ Off - - R/W NO Off