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DL305 Data Types and Memory Map
System
V-memory
Description of Contents
V7751
Fault Message Error Code — stores the 4-digit code used with the FAULT instruction when the
instruction is executed.
V7752
Reserved
V7753
Reserved
V7754
Reserved
V7755
Error code — stores the fatal error code.
V7756
Error code — stores the major error code.
V7757
Error code — stores the minor error code.
V7760--V7762 Reserved
V7763--V7764 Location for syntax error information.
V7765
Scan — stores the total number of scan cycles that have occurred since the last Program Mode to Run
Mode transition.
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).
DL350 Comm Port 2 Control Relays
The following system control relays are valid only for D3--350 CPU 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 communica-
tion 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