— A-2 —
Monitor for Internal Recognition of Input and Output State: Monitor IO1
Monitors the applied state of following function to the control inputs and outputs: the polarity
reverse and the anti-chattering timer to the control inputs, and the stability timer for the control
outputs.
◊ For the inputs, the monitor reports how the Driver Unit recognizes the application state
of functions.
(The readout is the applied state of parameters AB [Input polarity] and NW
[Anti-chattering timer] in the command PI [Edit input port])
◊ For the outputs, the monitor reports the state just before the application of output logic.
(The readout is the applied state of the parameters ST (Stability timer) in the command
PO (Edit control output). The parameter GC (Output logic) is not applied.)
Fig A-2: Example of Monitor IO1
IO1
GFEDCBA9876543210
00000000000000000
00000000000000000
State of input
Guide
State of output
0: Not functioning
1: Functioning
0: Not detected
1: Detected
The readout of the state of the input signals by the monitor IO1 will be affected by the parameter
AB (Input polarity).
◊ For example, the shipping set of the input EMST (Emergency stop) is a normally
closed contact. As shown in Figure A-3 below, the function of emergency stop is
effective even the input signal is OFF at the moment of (1). At the moment of (2), the
function of emergency stop is invalid when the input signal is ON.
Fig A-3: Port polarity and ON/OFF of the input EMST
ON
OFF
Effective
Ineffective
In
ut EMST
Emergency stop function
(In case of a normally
closed contact)
(1) (2)
◊ The table below shows the comparison of the readouts of the monitor IO0 and IO1 at
the moment of (1) and (2) in Figure A-3 above.
Table A-2: Read out of the monitors IO0 and IO1 when the input EMST is a normally closed
contact
Readout
Moment Monitor IO
G F E DC B A 9 8 7 6 5 4 3 2 1 0
IO0
¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾0
(1)
IO1
¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾1
IO0
¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾1
(2)
IO1
¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾0
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