Table of Contents
Advertisement
1 Introduction
1.8
Configuration
The configuration is set either on the device or using the setup program.
1.8.1
Baud rate
9600 baud, 19200 baud, or 38400 baud
1.8.2
Data format
Number of data bits-Number of stop bits-Parity:
•
8-1-none
•
8-1-even
•
8-1-odd
•
8-2-none
1.8.3
Device address
The device address must lie in the range 1 to 255.
Address 0 is reserved for broadcast messages, i.e., the instruction is executed by the IPC 300 but not
answered.
If an instruction with the device address 255 is received in the device, it will always be processed, even
if a different device address has been configured.
If a device address of 0 is configured, the power controller will not signal a bus error if it has not received
an instruction for 10 s.
1.8.4
Minimum response time
A value within the range 0 to 500 ms can be entered here.
After receiving a Modbus instruction, the specified period of time must first elapse before the response
is sent to the master. The parameter should be used for the RS422/485 interface if the master or one of
the other slaves connected to the bus needs a certain period of time to switch from transmit to reception
mode.
A set time of 0 ms means that the IPC 300 responds as quickly as possible. This setting should be de-
ployed when using the RS422/485 interface.
chapter 2.4 "Chronological sequence of communication", Page 10
8
Advertisement
Table of Contents
