Lenze PositionServo 940, Руководство пользователя

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S94P01B
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5.4 Communication interfaces
5.4.1 RS232 interface (standard)
Programming and diagnostics of the 940 drive is done over the standard RS232
communication port. The baud rate for this port can be configured to one of 7
different settings, ranging from 2400 to 115200. Drives are addressable with up to 32
addresses from 0-31. Communication speed and address are set from the drive’s front
panel display.
5.4.2 RS485 interface (option module)
PositionServo 940 drives can be equipped with an RS485 communication interface
option module (E94ZARS41) which is optically isolated from the rest of the drive’s
circuitry. This option module can be used for two functions: drive programming and
diagnostics using MotionView from a PC (with RS485 port) or as a Modbus RTU
slave. The 940 family of drives support 7 different baud rates, ranging from 2400
to 115200. Drives are addressable with up to 32 addresses from 0-31. The factory
setting for the baud rate is 38,400 with a node address of “1”. The drives address must
be set from the front panel display of the drive. When used with MotionView software,
the communication speed is also set from the front panel display. Please note that
baud rate and address are applied to both RS232 and RS485 interfaces in this case.
If used for Modbus RTU communications, the Modbus baud rate is set as a parameter
within MotionView.
PIN ASSIGNMENTS (RS485 interface)
Pin Name Function
1 ICOM Isolated Common
2 TXB Transmit B
3 TXA Transmit A
5.4.3 Using RS232 and RS485 interfaces simultaneously
When establishing communication between MotionView and a 940 drive, a
communication method must be selected. The connection choice can be either
“UPP over RS485/RS232” or “Ethernet”. The “UPP over RS485/RS232” selection
establishes a RS232 connection between MotionView and the first drive on the
network. Multiple drives can then be added to the network via RS485. Each drive
on the network will have a different Node Address. When setting up communications
the node address of the target drive must be set. MotionView will then send out a
communications packet to the first drive on the network, via the RS232 connection. If
the node address set in this packet doesn’t match the node address of the drive, the
drive will resend the packet, via RS485, to the next drive on the network. This process
will continue until the target drive is reached. The following message, “Device with
address # not present in the network” will appear If the target node could not be found.