DL205 User Manual, 4th Edition, Rev. D
3-51
Chapter 3: CPU Specifications and Operations
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The following system control relays are used for Koyo Remote I/O setup on Communications
Port 2.
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 set-up 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 set-up table data is valid.
(C760 = master, C761 = slave 1...C767 = slave 7
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
V36100–36157 Analog pointer method for expansion base 2
V36200–36257 Analog pointer method for expansion base 3
V36300–36357 Analog pointer method for expansion base 4
V36400–36427 Analog pointer method for local base
V37700–37737 Port 2: Set-up register for Koyo Remote I/O
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