Omron CPM1 Programming Manual

331
Special Instructions Section 5-26
instructions but LD and LD NOT. The logic diagnostic instructions and execu-
tion condition can consist of any combination of NC or NO conditions desired.
When the execution condition is OFF, FPD(––) is not executed. When the exe-
cution condition is ON, FPD(––) monitors the time until the logic diagnostics
condition goes ON, turning ON the diagnostic output. If this time exceeds T,
the following will occur:
1,2,3... 1. An FAL(06) error is generated with the FAL number specified in the first two
digits of C. If 00 is specified, however, an error will not be generated.
2. The logic diagnostic instructions are searched for the first OFF input con-
dition and this condition’s bit address is output to the destination words be-
ginning at D.
3. The CY Flag (SR 25504) is turned ON. An error processing program sec-
tion can be executed using the CY Flag if desired.
4. If bit 15 of C is ON, a preset message with up to 8 ASCII characters will be
displayed on the Peripheral Device along with the bit address mentioned
in step 2.
Control Data The function of the control data bits in C are shown in the following diagram.
Logic Diagnostic
Instructions
If the time until the logic diagnostics condition goes ON exceeds T, the logic
diagnostic instructions are searched for the OFF input condition. If more than
one input condition is OFF, the input condition on the highest instruction line
and nearest the left bus bar is selected.
When IR 00000 to IR 00003 are ON, the normally closed condition IR 00002
would be found as the cause of the diagnostic output not turning ON.
Diagnostics Output There are two ways to output the bit address of the OFF condition detected in
the logic diagnostics condition.
1,2,3... 1. Bit address output (used when bit 15 of C is OFF).
SR 25504
(CY Flag)
FPD(––)(50)
T
C
D
Processing after
error detection.
Execution
condition
Branch
Logic
diagnostic
instructions
Diagnostic
output
15 14 08 07 00
FAL number
(2-digit BCD, 00 to 99)
C:
Not used. Set to zero.
Diagnostics output
0 (OFF): Bit address output (binary)
1 (ON): Bit address and message output (ASCII)
00000 00002
00001 00003
Diagnostic
output

Omron CPM1 Specifications

General

Model	CPM1
Manufacturer	Omron
Instruction Set	Basic and advanced instructions
Power Supply	100 to 240 VAC or 24 VDC
Communication	RS-232C
I/O Points	10, 20, 30, or 40 points depending on the model
Timers	Yes, multiple timers available
Counters	Yes, multiple counters available
Input Voltage	24V DC
Output Type	Relay or transistor
Number of I/O Points	10, 20, 30, 40
Communication Ports	RS-232C (optional)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C
Humidity	10% to 90% (non-condensing)
Dimensions	Varies depending on the model
Weight	Varies depending on the model
Program Memory	2048 steps (2K steps)