EUCHNER EKS Series - Read Process

Manual EKS Electronic-Key Adapter USB
2094485-05-07/19 Subject to technical modifications Page 31/34
8.4.2 Read process
Command message (message core, PC → EKS, see Figure 4):
 TL (device addr.) (start addr. user data) (number of bytes of user data)
Reply message (message core, EKS → PC, see Figure 5 or Figure 6):
For this command there are two possible replies:
 RL (device addr.) (start addr. user data) (number of bytes of user data) (user data)
or
 RF (device addr.) (00
hex
, 00
hex
) (status number)
The reply message RL (see Figure 5) stands for correct reception of the data.
If an Electronic-Key cannot be read, an RF reply message is received (see Figure 6). The status number then
indicates the cause of the error.
Byte no. Description
Contents
ASCII
hexadecimal
decimal
0
Number of message bytes
07
7
1
2
Command identification
T
L
54
4C
84
76
3
Constant
01
1
4
5
Start address for the user data
00
00 ... 74
0
0 ... 116
6
Number of bytes of user data
01 ... 7C
1 ... 124
Figure 4: Command message Read Electronic-Key read/write (message core)
Byte no. Description
Contents
ASCII
hexadecimal
decimal
0
Number of message bytes
08 ... 83
8 ... 131
1
2
Command identification
R
L
52
4C
82
76
3
Constant
01
1
4
5
Start address for the user data
00
00 ... 7C
0
0 ... 116
6
Number of bytes of user data
01 ... 7C
1 ... 124
7 ... 122
User data
ASCII or hexadecimal or BCD (code transparent)
Figure 5: Reply message Read Electronic-Key read/write (message core)
Byte no. Description
Contents
ASCII
hexadecimal
decimal
0
Number of message bytes
07
7
1
2
Command identification
R
F
52
46
82
70
3
Constant
01
1
4
5
Padding data
00
00
0
0
6
Status number
*
Figure 6: Reply message Read Electronic-Key read/write – status (message core)
* Status number 02
hex
: Electronic-Key not in operating distance
(for further status numbers see chapter 8.6)