Rs-232C Port Servicing Time (Cqm1/Srm1 Only); Peripheral Port Servicing Time; Cycle Time - Omron CPM1 Programming Manual

Basic PC Operation and I/O Processes
1-2-4

RS-232C Port Servicing Time (CQM1/SRM1 Only)

1-2-5

Peripheral Port Servicing Time

1-2-6

Cycle Time

18
The following settings are used to determine the percentage of the cycle time
devoted to servicing the RS-232C port.
Servicing time setting enable
00: Disabled (5% used)
01: Enabled (setting in bits 00 to 07 used)
Servicing time (%, valid with bits 08 to 15 are 01)
00 to 99 (BCD, two digits)
Default: 5% of cycle time
Example: If DM 6616 is set to 0110, the RS-232C port will be serviced for
10% of the cycle time.
The servicing time will be 0.34 ms minimum.
The entire servicing time will not be used unless processing requests exist.
The following settings are used to determine the percentage of the cycle time
devoted to servicing the peripheral port.
Servicing time setting enable
00: Disabled (5% used)
01: Enabled (setting in bits 00 to 07 used)
Servicing time (%, valid with bits 08 to 15 are 01)
00 to 99 (BCD, two digits)
Default: 5% of cycle time
Example: If DM 6617 is set to 0115, the peripheral port will be serviced for
15% of the cycle time.
The servicing time will be 0.34 ms minimum.
The entire servicing time will not be used unless processing requests exist.
Make the settings shown below to standardize the cycle time and to eliminate
variations in I/O response time by setting a minimum cycle time.
Cycle time (4 digits BCD)
0000:Cycle time variable
0001 to 9999: Minimum cycle time (Unit: 1 ms)
Default: Cycle time variable
If the actual cycle time is shorter than the minimum cycle time, execution will
wait until the minimum time has expired. If the actual cycle time is longer than
15
Bit
DM6616
15
Bit
DM6617
15 0
Bit
DM6619
Section 1-2
0
0