Emerson unidrive m200 - Minimum Comms Transmit Delay; Silent Period; Drive Derivative

Value Text
1 600
2 1200
3 2400
4 4800
5 9600
6 19200
7 38400
8 57600
9 76800
10 115200
SerialBaudRate (11.025) defines the baud rate used by the serial comms interface.
Changing the parameters does not immediately change the serial communications settings. See ResetSerialCommunications (11.020) for more
details.
Parameter 11.026 Minimum Comms Transmit Delay
Short description Defines the minimum delay between the host and drive
Mode Open‑loop
Minimum 0 Maximum 250
Default 2 Units ms
Type 8 Bit User Save Update Rate Read on serial communications reset
Display Format Standard Decimal Places 0
Coding RW, BU
There will always be a finite delay between the end of a message from the host (master) and the time at which the host is ready to receive the response
from the drive (slave). The drive does not respond until at least 1ms after the message has been received from the host allowing 1ms for the host to
change from transmit to receive mode. This initial delay can be extended using MinimumCommsTransmitDelay (11.026) if required.
Minimum Comms Transmit Delay
(11.026)
Action
0
The transmitters are turned on and data transmission begins immediately
after the initial delay (≥1ms)
1
The transmitters are turned on after the initial delay (≥1ms) and data
transmission begins 1ms later
2 or more
The transmitters are turned on after a delay of at least the time specified by
MinimumCommsTransmitDelay (11.026) and data transmission begins
1ms later
The drive holds its own transmitters active for up to 1ms after it has transmitted data before switching to the receive mode; the host should not send any
data during this time.
Changing the parameters does not immediately change the serial communications settings. See ResetSerialCommunications (11.020) for more
details.
Parameter 11.027 Silent Period
Short description Defines the idle time required to detect the end of a received data message
Mode Open‑loop
Minimum 0 Maximum 250
Default 0 Units ms
Type 8 Bit User Save Update Rate Read on serial communications reset
Display Format Standard Decimal Places 0
Coding RW, BU
The silent period defines the idle time required to detect the end of a received data message. If SilentPeriod (11.027) = 0 then the silent period is at
least 3.5 characters at the selected baud rate. This is the standard silent period for Modbus rtu. If SilentPeriod (11.027) is non-zero it defines the
minimum silent period in milliseconds.
Changing the parameters does not immediately change the serial communications settings. See ResetSerialCommunications (11.020) for more
details.
Parameter 11.028 Drive Derivative
Short description Displays the drive derivative identifier
Mode Open‑loop
Minimum 0 Maximum 255
Default Units
Type 8 Bit Volatile Update Rate Power-up write
Display Format Standard Decimal Places 0
Coding RO, ND, NC, PT, BU
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
175