User manual

9 Functions and operations in the position control mode
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• Not setting the home position
ALM output
WNG output
ALM-RST input
Pulse input
An absolute position
loss alarm generates
Reconnect
the power
Cycling the power before
setting the home position
generates an absolute
position loss alarm again.
The alarm is reset
at the OFF edge of
the ALM-RST input.
Pulse input
inhibition
The WNG output remains ON
until the home (position) is set.
ON
OFF
ON
OFF
Inhibited
Permitted
ON
OFF
ON
OFF
9.6 Current position output
This function can be used when the absolute system function is enabled. current position data recognized by
the driver is output. It takes 0.5 to 1 second to read the data.
The data is output as a 56 bit data signal consisting of the current position, status, alarm code and checksum.
The data format is shown below.
The last 8 bits of the transmission data provide the checksum. They represent the last 8 bits of the result of
adding the 48 bits consisting of the absolute data, status, and alarm code in one-byte units a total of six times.
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Information that can be read
The information listed below can be read from the driver using this function.
The driver outputs all information as binary values.
Current position 32 bit + Status 8 bit + Alarm code 8 bit + Checksum 8 bit
• Current position (32 bit)
The first 32 bits are sent in binary mode, which is two's complement.
• Status (8 bit)
These numbers indicate the driver status.
Different information is assigned to each bit.
Status = 000 0 0 0 0 0
bit 0: overflow
bit 1: Loss of absolute data due to overspeed
bit 2: Loss of absolute data due to low battery voltage
bit 3: Low battery voltage
bit 4: No battery
bits 5 to 7: Not defined (always 0)
Example: When an overflow alarm has generated
Status = 0000 0001
• Alarm code (8 bit)
8 bits are sent in binary mode.
Example: When an overload alarm has generated
Alarm code = 0011 0000 = 48 (decimal) = 30 (hexadecimal)