Schneider Electric 61 User Manual
34
Command/reference switching
Channels
A channel is the name given to the source of a command or reference.
The six Altivar 61 channels are:
• The terminals
• The graphic display terminal
• The integrated Modbus ports
• The integrated CANopen port
• A network card
• The "Controller Inside" card
• The graphic display terminal
• The integrated Modbus ports
• The integrated CANopen port
• A network card
• The "Controller Inside" card
The Altivar 61 has two integrated Modbus ports. These two ports are physically independent of one another but together constitute a single
logic channel.
The drive does not distinguish between commands and references that come from the Modbus network port and those that come from the
Modbus HMI port.
logic channel.
The drive does not distinguish between commands and references that come from the Modbus network port and those that come from the
Modbus HMI port.
With the Altivar 61 drive, it is possible to select the active command channel and the active reference channel:
• Via configuration
• Via switching at the terminals or via a communication network
• Via switching at the terminals or via a communication network
Channel commands and references
All the drive’s command and reference parameters are managed on a channel-by-channel basis.
Only the control word (CMd), speed reference (LFrd) and frequency reference (LFr) are switched.
Only the control word (CMd), speed reference (LFrd) and frequency reference (LFr) are switched.
It is possible to identify the last value written for each channel and each command or reference parameter:
Parameter name
Parameter code
Taken into
account by the
drive
Modbus
CANopen
Communication
card
Controller Inside
Control word
CMd
CMd1
CMd2
CMd3
CMd4
Extended control word
CMI
CMI1
CMI2
CMI3
CMI4
Speed reference (rpm)
LFrd
LFd1
LFd2
LFd3
LFd4
Frequency reference (0.1 Hz)
LFr
LFr1
LFr2
LFr3
LFr4
PID regulator reference
PISP
PIr1
PIr2
PIr3
PIr4
Analog multiplier reference
MFr
MFr1
MFr2
MFr3
MFr4