YOKOGAWA FA-M3 VITESSE F3CX04-0N, User Manual

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B1-2
IM 34M06H63-01E 2nd Edition : Jul.16,2015-00
B1.1 Accessing Using Sequence Instructions
Accesses to this module from a sequence CPU can be classified into three types, namely,
reading from data registers, writing to data registers and reading from input relays.

Reading Registers (READ / HRD)
Use the Special Module Read instruction or Special Module High Speed Read instruction
for reading registers. Reading is performed in 16-bit units.
Table B1.1 Reading Registers
Function
No.
Instruction Mnemonic Symbol
Is Input
condition
Required?
Condition
for
Execution
Step
count
Processing
unit
Carry
Yes No
81
Special
module read
READ
READ
● ―
5
16 bits ―
81P ↑ READ
READ
6
83
Special
module high
speed read
HRD
HRD
● ―
5
16 bits ―
83P ↑ HRD
HRD
6

Description of Symbols