Specifications

Profibus DP Head Station STL-PB1 (Profibus DP)
2 - 10
MITSUBISHI ELECTRIC
Process Data Structure for Profibus DP
With some I/O modules, the structure of the process data is fieldbus specific. Depending on how the
head station is parameterized, the status bytes (S), control bytes (C) and data bytes (D0...Dn) of the
byte or word orientated modules are transmitted via Profibus in Motorola or Intel format.
● Digital I/O modules
● Two-channel analog input modules
NOTE
For the meaning of input and output bits or bytes of the connected STlite modules please refer to
the corresponding I/O module description in the appendix of this manual.
Type of module Name ID number Description
Process Image [Bit]
Input Output
Digital input modules
STL-DI8-V1 51205052
8 inputs for source type sensors, 24 V DC
80
STL-DI8-V2 51205053 8 0
Digital output
modules
STL-DO4 51205045
4 transistor outputs, 24 V DC, 0.5 A,
source type
04
STL-DO8 51205043
8 transistor outputs, 24 V DC, 0.5 A,
source type
08
STL-RO2 51205044
2 relay outputs 230 V AC / 30V DC,
500 VA/60 W
02
Tab. 2-5: Profibus DP process data of digital input and output modules
Type of module Name ID number Description
Register
communication
Process Image [Byte]
Input Output
Analog input module
(voltage)
STL-AD2-V 51205046 2 inputs 0 to 10 V
Yes 6 6
No 4 0
Analog input module
(current)
STL-AD2-I 51205047 2 inputs 4 to 20 mA
Yes 6 6
No 4 0
Analog input module
(temperature)
STL-TI2 51205048
2 inputs for Pt100
resistance
thermometers
Yes 6 6
No 4 0
Tab. 2-6: Profibus DP process data of two-channel analog input modules
Register
communication
Channel
Data type
MOTOROLA INTEL
Input Output Input Output
Yes
1
S0 C0 S0 C0
D1 D1 D0 D0
D0 D0 D1 D1
2
S1 C1 S1 C1
D3 D3 D2 D2
D2 D2 D3 D3
No
1
D1 — D0 —
D0 — D1 —
2
D3 — D2 —
D2 — D3 —
Tab. 2-7: Mapping for two-channel analog input modules