13
Basic PC Operation and I/O Processes
Section 1-3
2.
The startup mode will be PROGRAM mode or RUN mode, depending on
the Connecting Cable being used.
1-3-2
Hold Bit Status
Make the settings shown below to determine whether, when the power supply
is turned ON, the Forced Status Hold Bit (SR 25211) and/or I/O Hold Bit
(SR 25212) will retain the status that was in effect when the power was last
turned OFF, or whether the previous status will be cleared.
The Forced Status Hold Bit (SR 25211) determines whether or not the forced
set/reset status is retained when changing from PROGRAM mode to MONI-
TOR mode.
The I/O Hold Bit (SR 25212) determines whether or not the status of IR bits
and LR bits is retained when PC operation is started and stopped.
1-3-3
RS-232C Port Servicing Time
The following settings are used to determine the percentage of the cycle time
devoted to servicing the RS-232C port.
Example:
If DM 6616 is set to 0110, the RS-232C port will be serviced for
10% of the cycle time.
The minimum servicing time is 0.256 ms.
The entire servicing time will not be used unless processing requests exist.
Connecting Cable
Startup mode
CS1W-CN114 + CQM1-CIF01/02
PROGRAM mode
CS1W-CN118 + XW2Z-200/500S(-V)
PROGRAM mode
CS1W-CN226/626
RUN mode
CS1W-CN118 + XW2Z-200/500S-CV
RUN mode
15
0
0 0
Bit
DM 6601
SR 25211 setting
0: Clear status
1: Retain status
Always 00
SR 25212 setting
0: Clear status
1: Retain status
Default:
Clear both.
15
0
Bit
Servicing time setting enable
00: Disabled (5% of the cycle time)
01: Enabled (setting in bits 00 to 07 used)
Servicing time
(%, valid when bits 08 to 15 are set to 01)
00 to 99 (BCD, two digits)
Default:
5% of cycle time
DM 6616
