Example.
2 channels status readout (address 40201 to 40202 / address 30201 to 30202)
01-03-00-C9-00-02-CRCLo-CRCHi
01-04-00-C9-00-02-CRCLo-CRCHi
Response
Byte no
Designation
Size
Value [hex]
00
Module address
1-byte
01 [01 to F7]
01
Function code
1-byte
03 / 04
02
Number of data bytes N-byte
04 [depend on inquiry (4)]
03
Status 1-Hi
1-byte
00
04
Status 1-Lo
1-byte
01
05
Status 2-Hi
1-byte
00
06
Status 2-Lo
1-byte
02
07
CRC - Lo
1-byte
---
08
CRC - Hi
1-byte
---
Example.
2 channels status readout (address 40201 to 40202 / address 30201 to 30202)
01-03-04-00-01-00-02-CRCLo-CRCHi
01-04-04-00-01-00-02-CRCLo-CRCHi
In respond channel status 0 to 1 is present as 4-byte with value:
- channel_0 hi = 00, lo = 01 – sensor during converting
- channel_1 hi = 00, lo = 02 – detection of sensor
Response
- in case of error
Byte no
Designation
Size
Value [hex]
00
Module address
1-byte
01 [1 to F7]
01
Function code
1-byte
83 / 84
02
Error code
1-byte
01 - unknown function
02 - unknown data address
03 - unknown data value
04 - unknown error while inquiry converting
03
CRC - Lo
1-byte
04
CRC - Hi
1-byte
8. SPECIFICATION
TECHNICAL DATA
Transmission Parameters
Interface
RS-485
1-WIRE
Connector
Screw terminal, wire max. Ø 2,5mm
2
.
Screw terminal, wire max. Ø 2,5mm
2
.
Line length
1200 m
Up to 300 m
depends on 1-Wire bus and used cables
Maximum number of connected device
32 devices
64 sensors
Maximum baud rate
Up to 230,4 kbps
standard: up to 16,3 kbps,
Transmission line
2-pair twisted cable eg UTP
4x2x0,5(24AWG), shield inside large
interferences eg STP 4x2x0,5(24AWG)
1-pair, 2-pair twisted cable eg UTP
4x2x0,5(24AWG), shield inside large
interferences eg STP 4x2x0,5(24AWG)
Transmission type
RS485/RS422 MODBUS - halfduplex
(inquiry - response)
fullduplex (sending and receiving on the
same wire)
Standards
1-WIRE, EIA-485, CCITT V.11.
Optical Signalization
•
PWR – green LED power supply,
•
RX - red LED data receiving through 1-WIRE interface,
•
TX - yellow LED data transmission through 1-WIRE interface
27
ADA-401WP
