Communication extension card
CANopen communication card
-37-
Bit
Name
Value
Description
13–14
Run/stop mode
0
Keypad-based control
1
Terminal-based control
2
Communication-based control
3
Reserved
15
Heartbeat feedback
1
Heartbeat feedback
0
No heartbeat feedback
The function of each returned value can be set through the corresponding function code of the
VFD. The setting method is the same as that for "transmitted PZD" in PROFIBUS
communication. For details, see the VFD operation manual. Returned value 1, returned value
2, and returned value 3 correspond to transmitted PZD2, transmitted PZD3, and transmitted
PZD4, respectively. To set the function of returned value 1 to "Running frequency", you need
only to set "Transmitted PZD2" to "1: Running frequency". The same principle applies to other
returned values. Multiple returned values can be enabled simultaneously.
Example
Assume that the VFD is a Goodrive350 series VFD, the slave station address is 3, the VFD is
running, and the running frequency is 50.00 Hz. Returned value 1 is set to "Running
frequency", returned value 2 is set to "Output voltage", and returned value 3 is set to no
function.
Command analysis: You need to set returned value 1 to the running frequency of the VFD
(P15.13=1), returned value 2 to the output voltage of the VFD (P15.14=4), and returned value
3 to invalid (P15.15=0) first.
The VFD is running and the bus voltage has been established, and therefore the SW is
0x0101. The running frequency is 50.00 Hz, and therefore returned value 1 is 5000, that is,
0x1388. If the output voltage is 380 V, returned value 2 is 0x017C.
The PDO2 Tx command transmitted by the VFD is as follows.
COB-ID
SW
Returned
value 1
Returned
value 2
Returned
value 3
Byte0
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
Byte7
0x283
0x01
0x01
0x88
0x13
0x7C
0x01
0x00
0x00
3.5.5 PDO3 Rx and PDO4 Rx
PDO3 Rx and PDO4 Rx are used to modify the real-time process data of a VFD, such as set
frequency.
PDO3 Rx command
Master station -> slave station
Содержание Goodrive350 Series
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