Omron CJ1W-MA - REV 10-2008, Operation Manual

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Axis Operating Input Memory Areas Section 4-8
When using a W-series Servo Drive, the allocation and polarity of Servo Drive
input signals can be set in the Servo Parameters, but the external I/O status
depends on the polarity of the Servo Drive's input signals, as follows:
The forward rotation limit input (forward drive prohibited signal), and reverse
rotation limit input (reverse drive prohibited signal) are normally-closed con-
tact inputs (N.C. inputs) when polarity is normal. The origin proximity input
(origin return deceleration limit switch), and external latch inputs (1 to 3) are
normally-open contact inputs (N.O. inputs) when polarity is normal.
When using a SMARTSTEP Junior Servo Drive, the following status is shown.
(With the SMARTSTEP Junior, signal polarity is fixed.)
4-8-6 Expanded Monitoring
The PCU has a fixed monitoring function that monitors the following control
information for each axis and returns the result to the Axis Operating Input
Memory Areas.
Axis control status (word b)
Servo status (word b + 1)
External I/O status (word b + 3)
Present position (Feedback present position: Words b + 6, b + 7; Com-
mand present position: Words b + 8, b + 9)
The PCU also has an expanded monitoring function that monitors control
information selected from a number of categories, and returns the result to the
Axis Operating Input Memory Areas.
External I/O
status
Signal Servo Drive I/O
signal name
Signal polarity:
Normal (Setting: 0 to 6)
Signal polarity:
Reverse (Setting: 9 to F)
Sensor status:
Base block
(not receiving
power; Input
open)
Sensor status:
In operation
(Input closed)
Sensor status:
Base block
(not receiving
power; Input
open)
Sensor status:
In operation
(Input closed)
Forward rota-
tion limit input POT Forward drive pro-
hibited 1 0 0 1
Reverse rota-
tion limit input NOT Reverse drive pro-
hibited 1 0 0 1
Origin proximity
input DEC Origin return decel-
eration limit switch 0 1 1 0
External latch 1
input EXT1 External latch 1 input 0 1 1 0
External latch 2
input EXT2 External latch 2 input 0 1 1 0
External latch 3
input EXT3 External latch 3 input 0 1 1 0
External I/O status Signal Servo Drive I/O signal name Sensor status: Base
block (not receiving
power; Input open)
Sensor status: In
operation (Input
closed)
Forward rotation limit
input POT Forward drive prohibited 1 0
Reverse rotation limit
input NOT Reverse drive prohibited 1 0
Origin proximity input DEC Origin proximity input 0 1
External latch 1 input EXT1 External latch 1 input 0 1
Emergency stop
input STOP Emergency stop input 1 0