Application Mode (8F)
Command: Application Mode Command
Description:
This command reads/sets the operating setpoint by communications rather than using an analog input for the setpoint when a special application mode is active (see parameter 5). The modes currently defined are shown below. It is possible in the future that additional application modes may be added.
CMD = [8F]
UID = [01] - [FF]
AMD = [20],[21],[22],[23],[30],[31],[32]
Message:
[DLE][STX][UID][CMD][AMD][VL4]
[VL3][VL2][VL1][DLE][ETX][CSM]
Response:
If no errors, [DLE][STX][UID][ACK][DLE][ETX][CSM]
else,
[DLE][STX][UID][NAK][ERR][DLE][ETX][CSM]
Definitions:
[AMD] - Application Mode
[20]- Set Motoring torque setpoint
[21]- Set Regen torque setpoint
[22]- Set Horsepower setpoint
[23]- Set Speed/Ratio with ramp rate
[30]- Read Motoring Torque Setpoint
[31]- Read Regen Torque Setpoint
[32]- Read Horsepower Setpoint
[VL4] - Depends on value passed
[VL3] - Depends on value passed
[VL2] - Depends on value passed
[VL1] - Depends on value passed [ERR] - Reported Error
[80] - Unit not in remote
[82]- Illegal parameter number
[86]- Illegal Command number
[89]- Illegal Application value
[8A] - Illegal Application
An error message [8A] will be sent if a setpoint for horsepower [22] for instance is sent when parameter 5 is set to allow motoring torque limit, or
any other mode than horsepower. Examples:
[20]Motoring Torque setpoint can be 0 to 1000 (hex 3E8) where torque is set in tenths of percent (1000 equals 100.0%) A torque of 100.0% would then be sent as [00][00][03][E8].
[21]Regen Torque same description as above
[22]Horsepower setpoint has the same description as torque where hp is set in tenths of percent, 100% maximum
[23]Set speed/ratio with accel and decel ramp.
This is used whenever a temporary setpoint for speed is desired and the ramp up and down rates are different from those in the parameter table. This setpoint and ramp rate is temporary and the drive will revert automatically back to the normal setpoint and ramp rates on any succes- sive commands. Speed/ratio requires 4 bytes, accel requires 4 bytes and decel requires 4 bytes. For instance a complete message including the header, etc. for a speed of 1400 rpm and accel rate of 10 seconds and decel rate of 5 seconds to unit # 5 would be:
[10][02][05][8F[23][00][00][05][78][00][00]
[00][0A][00][00][00][05][10][03][CSM]
ATTACHMENTB: PARAMETER DESCRIPTION:
Following is a list of the parameters for the DFS-
1.All parameters are 4 byte values regardless of the data. For instance, parameter 5 is master slave and can be only [00] or [01] but the data bytes required for the parameter are [00][00][00][01] or [00][00][00][00]. This is done to keep communica- tions simple when dealing with parameter informa- tion, especially with any packed message.
59 through 63 are general use parameters for future use and not currently defined.
80 through 95 are special use parameters for future use and not currently defined.
Page 54 | Revised 7/95 | |
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