M Series AC Servo
User Manual
139
Rev. 1.0
7/31/2019
400-820-9661
P-74 (FI) Input X12 noise filter
Data Range Default Unit Data type
0~32767 0 --- DEC
Applies a digital filter to the input X12. The digital input must be at the same level for the time period
specified by the FI command before the input state is updated. For example, if the time value is set to
100 the input must remain high for 100 processor cycles before high is updated as the input state. One
processor cycle is 250µsec. A value of
“
0
”
disables the filter.
P-76 (PR)
Communication protocol
Data Range Default Unit Data type
1-127 15 --- DEC
The serial communication protocol settings. There are a number of settings that can be turned on or
off in the PR command. Each setting is assigned a bit in a 8-bit binary word. The parameter of the PR
command is the decimal equivalent of this word. If you send the PR command without a parameter the
drive will respond with the decimal equivalent of the word as well. The different protocol settings and
their bit assignments are shown below.
Bit 0 = Default (
“
Standard SCL
”
)
bit 1 = Always use Address Character
bit 2 = Ack/Nack
bit 3 = Checksum (RESERVED)
bit 4 = RS-485 Adaptor
bit 5 = 3-digit numeric register addressing
bit 6 = Checksum Type
bit 7 = Little endian or big endian used in MODBUS type drive
bit 8 = Four wires/two wires
P-77 (TD) Transmit delay
Data Range Default Unit Data type
0~100 2 --- DEC
The time delay used by the drive when responding to a command that requests a response. Typically
this is needed when using the 2-wire RS-485 interface (Half-duplex). Because the same wires are used
for both receive and transmit a time delay is usually needed to allow transition time.
P-78 (BR) Baud rate
Data Range Default Unit Data type
1~5 1 --- DEC
This parameter sets the bit rate (baud) for serial communications. At power up a drive will send its
power-up packet detected after 1 second and the drive is configured for SCL or Q operation (see PM
command) the drive will setthe baud rate according to the value stored in the Baud Rate NV parameter.
A Host system can set the baud rateat anytime using this command.
1 = 9600bps
2 = 19200bps
3 = 38400bps
4 = 57600bps
5 = 115200bps
P-79 (DA) RS-485 Address
Data Range Default Unit Data type
1~32 32 --- DEC
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