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69
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68
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Communication
Communication
Overview of communication
With the upper host controller, which can be connected with 31 brushless amplifiers at
the maximum via serial communication conforming to RS485, enables the following:
1. Rewriting parameters
2. Browsing and clearing status and history of trip condition
3. Monitoring control status including present position, status, I/O, etc.
4. Start and stop of motor
[Advantage]
• It is allowed to write parameters by one operation from host controller in startup of the
machine.
• Operating condition of the machine can be displayed, which improves serviceability.
Connection of communications line
Connect one host controller with more than one brushless amplifier via RS485 communi-
cation, and set the device number of each brushless amplifier (Pr
60
) at 81h (129) to 9Fh
(159). Set the device number for the host as 01h (1) to 1Fh (31).
<Note>
Device number is set at 81h (129) in default setting. When connecting more than one
brushless amplifier via RS485, be sure to change the device number beforehand with
the Digital key pad or communication software “PANATERM for BL” (Can be download-
ed from our web site).
[Example of connection]
RS485
Host controller
Device number
= 01h(1)
Device number
= 81h(129)
Device number
= 82h(130)
Brushless amplifier
Device number
= 83h(131)
Device number
= 84h(132)
... Max 31 units
Interface of connector for communications unit
Communication system
RS485
Half duplex, asynchronous communication method
Communication baud rate 2400, 4800, 9600 bps
Set by Pr61
Data
7 bits, 8 bits
Set by Pr62
Parity
None, even number, or odd number
Set by Pr62
Start bit
1 bit
Stop bit
1 bit, 2 bits
Set by Pr62
Host address
01h to 1Fh
Amplifier address
80h to 9Fh (80h for simultaneous transmission.)
Set by Pr60
• Modification of transmission parameters (Pr60 to 65) becomes effective when resetting
the power supply of the motor.
• The transmission parameters can be changed by the Digital key pad (sold separately) or
RS485 communication.
Equivalent to SN75176
Connector (SER)
Connector (SER)
14
13
3
RS485
＋
RS485
−
GND
Equivalent to SN75176
14
13
3
RS485
＋
RS485
−
GND
Twisted pair wire
Shielded wire
• Use the shield of shielded wire for GND.
• Set the maximum total extension of cable within 10 m in use.
• Terminal resistor is not required.
RS485
＋
RS485
−
GND
FG
Host (01h)
Brushless amplifier 1
(81h)
Brushless amplifier 2
(82h)
