Omron SYSMAC CVM1 Series Operation Manual page 437

Cycle Time
6-2-2 Duplex Initialization
Execution Timing g
Both CPUs are turned ON with
DPL setting.
Initialize Button is pressed with
DPL setting. (Unless the PC is
already operating in duplex
mode.)
Start of operation in duplex mode
0202: MEMORY AREA
WRITE
0203: MEMORY AREA FILL
0221: UNIT SETUP WRITE
0222: I/O TABLE CREATE
0304: PROGRAM AREA
PROTECT
0305: PROGRAM AREA
PROTECT CLEAR
0307: PROGRAM AREA
WRITE
0321: PROGRAM
INSERT/DELETE
0323: OPERAND CHANGE
0325: TIM/CNT SV CHANGE
2104: ONLINE I/O REPLACE
START/END
220B: PARAMETER AREA
FILE TRANSFER
220C: PROGRAM AREA FILE
TRANSFER
420
Do not leave Service Disable Bits ON for longer than is necessary; service be-
tween the PC and the designated Unit will be stopped completely as long as the
corresponding Service Disable Bit is ON.
Word(s) Bit(s)
A015 00 to 15
A017 03
04
05
When the PC is operating in duplex mode, duplex initialization is performed just
after host link servicing to coordinate data values in the active and standby CPU
Units. An active/standby CPU changeover cannot occur during duplex initializa-
tion because the PC is in simplex status, not duplex status, during duplex initiali-
zation.
PC operation will not continue if a changeover error (WDT error, memory error,
or CPU Usage Switch setting of "NO USE") occurs in the active CPU Unit during
duplex initialization.
The following table shows the execution timing and processing that occur during
duplex initialization. (UM is the Program Area and IOM is I/O memory.)
UM UM
Verification Transfer Verification
YES --- YES
YES YES YES
--- --- ---
--- --- YES
--- --- YES
--- --- YES
--- --- YES
YES YES ---
YES YES ---
YES YES ---
YES YES ---
YES YES ---
YES YES ---
--- --- ---
--- --- YES
YES YES ---
Function
CPU Bus Service Disable Bits
(Bits 00 to 15 correspond to units #0 to #15.)
Host Link/NT Link Service Disable Bit
Programming Device Service Disable Bit
I/O Refresh Disable Bit
Processing
PC Setup PC Setup
Transfer Verification
--- YES
YES YES
--- YES
YES YES
YES YES
YES YES
YES YES
--- YES
--- YES
--- YES
--- YES
--- YES
--- YES
--- YES
YES YES
--- YES
Section 6-2
EM Size EM IOM
Transfer Transfer
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES
YES YES