135
SV200 DC Hardware Manual
920-0126A
4/14/2017
P-74 (FI)
Input X12 noise filter
Data Range
Default
Unit
LED Display
0 - 32767
0
---
0
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
LED Display
1 - 127
15
---
5
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 an 8-bit binary word. The parameter of the PR command is the decimal equivalent of this word. If the PR
command is sent 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 for RS-485 communication
P-77 (TD)
Transmit delay
Data Range
Default
Unit
LED Display
0 - 100
2
---
2
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 to both receive and transmit a time delay is usually needed to
allow transition time.
P-78 (BR)
Baud rate
Data Range
Default
Unit
LED Display
1 - 5
1
---
1
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 set the baud rate according to the value
stored in the Baud Rate NV parameter. A Host system can set the baud rate at anytime using this command.
1:
9600bps
2:
19200bps
3:
38400bps
4:
57600bps
5: 115200bps