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ESERA GmbH, ESERA-Automation 2020
www.esera.de
19200 V2.0 R1.0 Manual
Page 8 of 10
15
Internal communication among 1-Wire Gateway and Embedded Computer
15.1
ESERA ASCII text protocol / programming manual
The 1-Wire Gateway inside the ESERA-Station 200 provides two types of protocols. The ESERA text protocol in
ASCII format easily supports configuration and analysis whereas the ESERA text protocol runs on “GET” and
“SET” commands.
The ESERA text protocol is totally open and documented. The latest version of the ESERA protocol description is
available for download in our webshop (
https://www.esera.de/produkte/software/downloads-firmware-1-wire-
) as well as in the ESERA Config-Tool 3 download area.
15.2
Modbus protocol
ESERA-Station 200 is able to communicate to ESERA text protocol or Modbus TCP protocol with no switching.
For communication any Modbus slave-address (device address) can be chosen. Device address equals the
1-wire Gateway / Controller number. Device address is set to 1 by default.
The Modbus protocol is standardized configured. Please refer to the following table for a partial address-
overview. The entire addressing overview can be found in the programming manual, which can be found in the
download area of this product on our website and by the configuration software ESERA "Config Tool 3".
Partial Modbus address specification
Specification
reading address
number of words
(16Bit)
type of data
Controller No.
60000
1
text
Article-No.
60001
1
text
Firmware Version
61000
4
string
Hardware
61010
3
string
Serial number
61020
9
string
Time
61030
4
string
Date
61035
4
string
…
1-Wire bus sensors and
actuators
OWD 1/1-Wire module 1
40100
1
Integer
40101, 40102
2
Dword1
40103, 40104
2
Dword2
40105, 40106
2
Dword3
40107, 40108
2
Dword4
40109, 40110
2
Dword5
40111, 40112
2
Dword6
40113, 40114
2
Dword7
40115, 40116
2
Dword8
OWD 2/1-Wire module 2
40200
1
Integer
40201, 40202
2
Dword1
40203, 40204
2
Dword2
…
16
Operating conditions
The operation of the assembly group can take place only on condition of observing the required voltage and the
ambient conditions. The operating position of the device is irrelevant. The device is meant to be used in dry areas
free of dust.
Should condensed water build up within the sensor, an acclimatization period of at least 2 hours must be met. The
components can be operated only under the supervision of an electrically skilled person. Assembly groups and
components do not belong into the hands of children
In industrial facilities, the accident prevention regulations of the federation of industrial professional associations for
electrical installations and equipment must be observed. Do not operate the components in an environment with
inflammable gases, vapors or dusts or in an environment where such gases, vapors or dusts may occur.
