Displaying Destination Parameters Only; Communications - Nidec Unidrive M200 User Manual

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5.11

Displaying destination parameters only

By selecting 'dest' in Pr 00 (Alternatively enter 12001 in Pr 00), the only parameters that will be visible to the user will be destination parameters. This
function does not require a drive reset to become active. In order to deactivate this function, return to Pr 00 and select 'none' (alternatively enter a
value of 0).
Please note that this function can be affected by the access level enabled, refer to section 5.9 Parameter access level and security on page 27 for
further information regarding access level.
5.12

Communications

Installing an AI-485 Adaptor provides the drive with a 2 wire EIA 485 serial communications interface. This enables the drive set-up, operation and
monitoring to be carried out with a PC or controller as required.
5.12.1 EIA 485 Serial communications
Communication is via the RJ45 connector or screw terminals (parallel connection). The drive only supports Modbus RTU protocol.
The communications port applies a 1.25 unit load to the communications network.
USB to EIA 485 Communications
An external USB hardware interface such as a PC cannot be used directly with the 2-wire EIA 485 interface of the drive. Therefore a suitable
converter is required.
A suitable USB to EIA 485 isolated converter is available from Control Techniques as follows:
• CT USB Comms cable (CT Part No. 4500-0096)
When using the above converter or any other suitable converter with the drive, it is recommended that no terminating resistors be connected on the
network. It may be necessary to 'link out' the terminating resistor within the converter depending on which type is used. The information on how to link
out the terminating resistor will normally be contained in the user information supplied with the converter.
Serial communications set-up parameters
The following parameters need to be set according to the system requirements.
8 2 NP (0),
8 1 NP (1),
8 1 EP (2),
8 1 OP (3),
8 2 NP M (4),
Serial Mode 8 1 NP M (5),
(11.024) 8 1 EP M (6),
8 1 OP M (7),
7 1 EP (8),
7 1 OP (9),
7 1 EP M (10),
7 1 OP M (11)
600 (1),
1200 (2),
2400 (3),
4800 (4),
Serial Baud Rate 9600 (5),
(Pr 43) 19200 (6),
38400 (7),
57600(8),
76800(9),
115200 (10)
Serial Address
1 to 247
(Pr 44)
Reset Serial
Communications Off (0) or On (1)
(Pr 45)
28
Electrical Getting Basic
installation started parameters
Serial communications set-up parameters
The drive only supports the Modbus RTU protocol and is always a slave. This parameter defines the
supported data formats used by the EIA 485 comms port (if installed) on the drive. This parameter can be
changed via the drive keypad, via a option module or via the comms interface itself.
This parameter can be changed via the drive keypad, via a option module or via the comms interface itself. If
it is changed via the comms interface, the response to the command uses the original baud rate. The master
should wait at least 20 ms before sending a new message using the new baud rate.
This parameter defines the serial address and an addresses between 1 and 247 are permitted.
When the above parameters are modified the changes do not have an immediate effect on the serial
communication system. The new values are used after the next power up or if Reset Serial Communications
is set to 1.
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Unidrive M200 / M201 Control User Guide
Issue Number: 2
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