Specifications

Section 2—Modbus Plus Overview Bulletin No. VVDED397044US R12/00

Global Data Transmission December 2000

3. Power up the drive controller.

4. Adjust the five MODBUS PLUS parameters using the operator

keypad or the PC software (part number VW3A8104).

— TLP: Peer cop time-out. Factory setting 1 s. Change the setting if

necessary. Disconnecting the PLC or the drive controller for this

duration will stop the motor and the drive controller will switch to

CNF fault mode.

— CDN: Control node. Factory setting is 0. Set this parameter to 3 to

correspond to the address of the PLC which is to control the drive

controller via peer cop.

— REG: Number of peer cop registers received from the PLC.

Factory setting is 0. Set this parameter to 5 (five registers received

from the PLC). Note that other stations can no longer write to

these five peer cop registers via message handling.

1st peer cop register = CMD control word (Run, Stop, Reset, etc.)

2nd peer cop register= LFR speed reference word

3rd peer cop register = CMI integral control word

4th peer cop register = HSP high speed limit

5th peer cop register = LSP low speed limit

— GLB: Number of global data registers sent on the network. Factory

setting is 0. Set this parameter to 14 (14 registers sent to the

network and read by the PLC).

— PRC: Factory setting is No. Set this parameter to Yes to use peer

cop.

5. To fix the speed reference at 25 Hz, set LFR to 250 (second peer cop

6. Bring the drive controller from “ATV58 On and Locked” to “Standby

Status” by setting CMD to 6 and waiting until the ETA (word 458) is

equal to 21.

7. Next set the drive controller to “Ready” state. Set CMD to 7 and wait

until the 9th global data register ETA is XX23h.

8. Bring the drive controller to “Running” state by setting CMD to 0F for

forward or 80F for reverse and wait until the ETA (word 458) is equal

to 27h.

9. To set the drive controller to STOP, set CMD = 100 Fh.

10. If the drive controller is in CNF fault mode (register ETA = XXX8h), to

reset it via the network set CMD to 80h. Then perform steps 6 and 7

to rotate the motor.

11. To change the Time-Out parameter TLP:

— Stop the motor by setting CMD to 100 Fh.