EUCHNER EKS FSA with Ethernet Interface - Manual (Page 36)

Manual EKS Electronic-Key Adapter Ethernet
8.3.2 Read process
Command message (message core, PC/PLC (control system)
→ EKS, see Figure 10):
f TL (device addr.) (start addr. user data) (number of bytes of user data)
Reply message (message core, EKS
→ PC/PLC (control system), see Figure 11 or Figure 12):
For this command there are two possible replies:
f RL (device addr.) (start addr. user data) (number of bytes of user data) (user data)
or
f RF (device addr.) (00
hex
, 00
hex
) (status number)
The reply message RL (see Figure 11) stands for correct reception of the data.
If an Electronic-Key cannot be read, an RF reply message is received (see Figure 12). The status number then
indicates the cause of the error.
Content
Byte no. Description
ASCII hexadecimal decimal
0 Number of message bytes 07 7
1
2
Command identification
T
L
54
4C
84
76
3 Device address 01 1
4
5
Start address for user data
00
00 ... 73
0
0 ... 115
6 Number of bytes of user data 01 ... 74 1 ... 116
Figure 10: Command message read Electronic-Key read/write (message core)
Content
Byte no. Description
ASCII hexadecimal decimal
0 Number of message bytes 08 ... 7B 8 ... 123
1
2
Command identification
R
L
52
4C
82
76
3 Device address 01 1
4
5
Start address for user data
00
00 ... 73
0
0 ... 115
6 Number of bytes of user data 01 ... 74 1 ... 116
7 ... 122 User data ASCII or hexadecimal or BCD (code transparent)
Figure 11: Reply message read Electronic-Key read/write (message core)
Content
Byte no. Description
ASCII hexadecimal decimal
0 Number of message bytes 07 7
1
2
Command identification
R
F
52
46 82
70
3 Device address 01 1
4
5
Padding data
00
00 0
0
6 Status number *
Figure 12: Reply message read Electronic-Key read/write - status (message core)
* Status number 02
hex
: Electronic-Key not in the operating distance
(For further status numbers see section 8.5)
Page 36/40 Subject to technical modifications 100420-02-01/09