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Anhang | Communication via RS485 Digital Interface
MSC7401 / 7802 / 7602 Miniature sensor controller for inductive displacement sensors
A 4
Communication via RS485 Digital Interface
A 4.1
General
This manual describes how to obtain the digital measurement values from the induSENSOR MSC7xxx
controller without using the MICRO-EPSILON sensorTOOL. Direct digital communication requires that the
controller was set up before according to the manual.
To do so, you can use, e.g., the PC sensorTOOL and the IF7001/USB single-channel RS485/USB converter.
A 4.2
Hardware Configuration
Transmission technology: UART
Electrical level:
RS485
Baud rate:
256,000 baud (optional: 9600 baud)
Data framing:
Startbits: 1; Databits: 8; Parity: Even; Stopbits: 1
1. Master: Send Request
2. Slave: Answer
Master
Slave
Fig. 89 Hardware configuration
A 4.3
Protocol
Name
Description
Format
Example
DA
Destination Address
1 byte
0x7E = Address: 126
SA
Source Address
1 byte
0x01 = Address: 1
New_Adr
New Address
1 byte
0x7C = Address: 124
FSC
Checksum
Sum without arithmetic
overflow; mod 256
Fig. 90 Protocol example
i
DA and SA have to be different!
