Modbus Process Image; Bc7300 Process Image - Beckhoff BC7300 Manual

MODBUS
MODBUS example
Example for the BC7300
22

MODBUS Process Image

Terminals
POS 1. Terminal 2 digital inputs
POS 3. Terminal 2 digital outputs
POS 5. Terminal 2 analog inputs
POS 8. Terminal 2 analog outputs
PLC variables 16 byte inputs
PLC variables 16 byte outputs

BC7300 Process Image

Byte address Terminal
0 KL3002 (POS 6)
1
2
3
4
5
6
7
8 KL3002 (POS 7)
9
10
11
12
KL4032 (POS 9)
13
14
15
16
17
18
19
20
KL1012 (POS 2)
21
128..143 PLC Variables
Functions Offset
4, 23 0x0802
2 0x0000
0x0001
3, 6, 16, 23 0x0002
1, 5, 15 0x0000
0x0001
4, 23 0x0800
0x0801
3, 6, 16, 23 0x0000
0x0001
4, 23 0x0803
0x0804
0x0805
0x0806
0x0807
0x0808
0x0809
0x080A
3, 6, 16, 23 0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x000A
Inputs Terminal
Status KL3002
(POS 6)
-
Data 0
Data 1
Status
-
Data 0
Data 1
Data 0 KL4032
(POS 9)
Data 1
Data 0
Data 1
Status
-
Data 0
Data 1
Status KL4032
(POS 10)
-
Data 0
Data 1
Bit 0/1 KL2112
(POS 4)
-
PLC
Variables
Length
16 bit
1 bit
1 bit
16 bit
1 bit
1 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
16 bit
Outputs
Control
-
Data 0
Data 1
Control
-
Data 0
Data 1
Control
-
Data 0
Data 1
Control
-
Data 0
Data 1
Data 0
Data 1
Data 0
Data 1
Bit 0/1
-
BC7300