GW-7557 PROFIBUS/HART Gateway User Manual
(Version 1.00, Dec/2011)
PAGE: 32
GW-7557 to the PROFIBUS master.
4.6 I/O data exchange
4.6.1 Input data area
The maximum length of input data is 240 bytes. Before arrange “Input module
“or “HART Command module”, the user must arrange and configure the
“system setting module”. The user can get data form HART slave devices by
“read Input module” or “HART Command module”.
Table 9
Input data area
Module
Byte
Data
Description
0
1
Data
The number of HART commands that have to be sent
2
3
Data
The number of HART commands that have been sent
4
5
Data
The number of HART commands that have been received
6
7
Data
The number of HART commands that have error occurred
8
9
Data
The ID of HART command that have error occurred in the
Output queue
10
0~3
The channel number of response frame
11
Data
The length of the response frame
System
Setting
module
12
1~255
The capacity of Output Queue
Input
module
Or
HART
Command
module
13~239 Data Receive
data
Data input command (byte 11)
The length of response frame does not include preamble and check byte
.
