gefran 2500 Guide To Configuration And Network Installation

Page 6 80018C_MSW_2400-2500-Profibus_1209_ENG
4 PROFIBUS-DP DATA STRUCTURE
The “Configuration Telegram” (SAP 62) managed by the PROFIBUS Master has to contain the exact configuration
of data (number of bytes, format and consistency) exchanged during the “DATA EXCHANGE” operative state (SAP
DEFAULT).
By means of an area of 7 consistent bytes, always present, defined Parametric Data, the PROFIBUS Master (PLC
or Supervisor) can access any parameter of the instrument’s MODBUS memory map.
A second area contains 32 I/O bytes maximum, defined Process data, that correspond to 16 read variables and 16
write variables of the instrument’s MODBUS memory map.
The user can select the read or write variables to attribute to the Process data, based on the application, by
means of the “Parameterization Telegram” (SAP 61).
When the PROFIBUS Master requests diagnostics from the instrument by means of the “Diagnostics Data Request
Telegram” (SAP 60), 1 word will be transmitted that it evidences an eventual breakdown in the instrument .
4.1 CHANGE NODE ADDRESS TELEGRAM (SAP 55)
Class 2 Profibus Masters can change the address of Slaves with the “Set_Slave_Add” function.
BYTE
DESCRIPTION
VALUE
(hex)
1 New address n
2 Identifying number (high byte) 0A
3 Identifying number (low byte) 40
4 Enable (00)\Disable (01) other changes 00
4.2 CONFIGURATION TELEGRAM (SAP 62)
The PROFIBUS Master sends this to all Slave nodes before entering the “DATA EXCHANGE” operative state; in
case of incorrect configuration, the instrument will not communicate with the Master.
In the following table the maximum configuration is visualized.
BYTE
DESCRIPTION
VALUE
(hex)
0 PARAMETER DATA (7 bytes I/O consistent) 0xB6
1 PROCESS DATA 1 (1 word I/O) 0x70
2 PROCESS DATA 2 (1 word I/O) 0x70
3 PROCESS DATA 3 (1 word I/O) 0x70
4 PROCESS DATA 4 (1 word I/O) 0x70
5 PROCESS DATA 5 (1 word I/O) 0x70
6 PROCESS DATA 6 (1 word I/O) 0x70
7 PROCESS DATA 7 (1 word I/O) 0x70
8 PROCESS DATA 8 (1 word I/O) 0x70
9 PROCESS DATA 9 (1 word I/O) 0x70
10 PROCESS DATA 10 (1 word I/O) 0x70
11 PROCESS DATA 11 (1 word I/O) 0x70
12 PROCESS DATA 12 (1 word I/O) 0x70
13 PROCESS DATA 13 (1 word I/O) 0x70
14 PROCESS DATA 14 (1 word I/O) 0x70
15 PROCESS DATA 15 (1 word I/O) 0x70
16 PROCESS DATA 16 (1 word I/O) 0x70

gefran 2500 Specifications

General

Brand	gefran
Model	2500
Category	Controller
Language	English