Precautions For Using Plc Functions - Delta C2000 series User Manual

16-2 Precautions for Using PLC Functions

1. Default setting of PLC communication protocol is 7,N,2 ,9600, station number 2. User can
change PLC station using Pr.09-35 but station address must be different to the AC motor drive's
station address (Pr.09-00).
2. C2000 series offers 2 communication ports for PLC program upload and download. Refer to the
figure follows for port location. The communication protocol of Channel 1 is always
19200,8,N,2。
3. Host controller can read/write data from/to both the AC motor drive and the internal PLC
program by setting the drive and internal PLC program to two different station numbers. For
example, if user wants to set AC motor drive as station 1 and PLC as station 2, please write
following setting to the host controller:
When setting 01(Station) 03(Read) 0400(Address) 0001(1 data), the host controller can read the
Pr.04-00 from the AC motor drive.
When setting 02(Station) 03(Read) 0400(Address) 0001(1 data), host controller will read X0
data from the internal PLC program.
4. The internal PLC program will stop operation when upload/download programs.
5. When using WPR command to write parameters, parameters can be changed for a maximum of
9
10 times. It is crucial not to exceed this limit to prevent occurrence of serious error. Number of
calculations based on the value is changed. If the values which to be written is same as present
data, the number does not add up. If the value to be written is different, the number calculated
will be "plus-one."
Chapter 16 PLC Function C2000 Series
Channel 1
SG-
SG+
Channel 2
8 1
M odbus RS-485
Pin 1~2, 7, 8:
Pin 3, 6:GND
Pin 4:SG-
Pin 5:SG+
RS-485
16-3
Reserved