The following system control relays are used for Koyo Remote I/O setup on Communications
Port 2.
DL205 User Manual, 4th Edition, Rev. B
3–48
Chapter 3: CPU Specifications and Operations
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A
B
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D
System
V-memory
Description of Contents
V7766
Contains the number of seconds on the clock. (00 to 59)
V7767
Contains the number of minutes on the clock. (00 to 59)
V7770
Contains the number of hours on the clock. (00 to 23)
V7771
Contains the day of the week. (Mon, Tue, etc.)
V7772
Contains the day of the month (1st, 2nd, etc.)
V7773
Contains the month. (01 to 12)
V7774
Contains the year. (00 to 99)
V7775
Scan — stores the current scan time (milliseconds)
V7776
Scan — stores the minimum scan time that has occurred since the last Program Mode to Run
Mode transition (milliseconds)
V7777
Scan — stores the maximum scan time that has occurred since the last Program Mode to Run
Mode transition (milliseconds)
V36000–36057
Analog pointer method for expansion base 1 (DL250–1)
V36100–36157
Analog pointer method for expansion base 2 (DL250–1)
V36400–36427
Analog pointer method for local base
V37700–37737
Port 2: Setup register for Koyo Remote I/O
System CRs
Description of Contents
C740
Completion of setups – ladder logic must turn this relay on when it has finished writing to the Remote I/O setup
table
C741
Erase received data – turning on this flag will erase the received data during a communication error
C743
Re-start – Turning on this relay will resume after a communications hang-up on an error.
C750 to C757
Setup Error – The corresponding relay will be ON if the setup table contains an error
(C750 = master, C751 = slave 1 C757 = slave 7)
C760 to C767
Communications Ready – The corresponding relay will be ON if the setup table data is valid
(C760 = master, C761 = slave 1 C767 = slave 7)