5.19 I/O Signal Allocations
5.19.1 Input Signal Allocations
5-50
5.19
I/O Signal Allocations
Functions are allocated to the pins on the I/O signal connector (CN1) in advance. You can
change the allocations and the polarity for some of the connector pins. Function allocations
and polarity settings are made with parameters.
This section describes the I/O signal allocations.
There are the following two methods to allocate I/O signals.
Specify the allocation method to use in Pn50A = n.
X (I/O Signal Allocation Mode).
5.19.1
Input Signal Allocations
Σ
-7S-Compatible Input Signal Allocations
The input signals that you can allocate to the pins on the I/O signal connector (CN1) and the
related parameters are given in the following table.
Allocation Method
Description
Benefits
Σ
-7S-Compatible
I/O Signal Alloca-
tions
Predetermined combinations of I/O signals,
pin numbers, and polarities are provided
and you can specify the required combina-
tion with a parameter.
Compatibility with
Σ
-7S SERVOPACKs
Multi-Axis I/O Sig-
nal Allocations
You can specify the pin number to allocate
for each I/O signal.
There are no restrictions in the combina-
tions of I/O signals and pin numbers,
allowing for flexible signal allocations.
Parameter
Description
When Enabled
Classification
Pn50A
n.
1
(default set-
ting)
Σ
-7S-compatible I/O signal allocations
After restart
Setup
n.
2
Multi-axis I/O signal allocations
•
If you change the default polarity settings for the P-OT (Forward Drive Prohibit Input) or N-OT
(Reverse Drive Prohibit Input) signal, the overtravel function will not operate if there are signal
line disconnections or other problems. If you must change the polarity of one of these signals,
verify operation and make sure that no safety problems will exist.
•
If you allocate two or more signals to the same input circuit, a logical OR of the inputs will be
used and all of the allocated signals will operate accordingly. This may result in unexpected
operation.
Input Signal
Input Signal Name
Parameter
P-OT
Forward Drive Prohibit Input
Pn50A = n.X
N-OT
Reverse Drive Prohibit Input
Pn50B = n.
X
/P-CL
Forward External Torque/Force Limit Input Pn50B = n.
X
/N-CL
Reverse External Torque/Force Limit Input Pn50B = n.X
/DEC
Origin Return Deceleration Switch Input
Pn511 = n.
X
/EXT1
External Latch Input 1
Pn511 = n.
X
/EXT2
External Latch Input 2
Pn511 = n.
X
/EXT3
External Latch Input 3
Pn511 = n.X
FSTP
Forced Stop Input
Pn516 = n.
X
Important