DeviceNet
14 Appendix
14-28
L
BA2175 EN 2.0
14.3.7 LAD34 - EXPL_BTR
The scanner content is read.
2175DeN107
Scanner status bit 15 indicates that a responseis availablein scannerareaM1:1.Thescannerstatus
bit activates the copy command and sets a marker bit.
The marker bit activates the scanner reset to ensure the next order.
The scanner input area is copied to the data area N10:0 with 32 words, i.e. the data received from
the scanner are saved. The data can be processed from the data word N10:0.
The scanner must
be reset for the next order.
This is achieved by writing the reset command for the corresponding order and TXID, e.g. 0104
hex.
The order is reset with TXID 01.
Word High byte Low byte
0 TXID = 01 Order No. (e.g. 01) Command = 04 01= Execute block
04= Clear response buffer
The read order response in N10:0 has the following structure:
Word High byte Low byte
0 TXID 01 (order No.) Status 01 = T ransaction successful
1 Port 00 (with SLC only 0) Size 0E(userdatasize[byte])
2 Service MAC ID DeviceNet node address
3 L-code 00 L-code 0C
4 00 Subcode 00
5 Value LOW word Value LOW word
6 Value HIGH word Value HIGH word
Response to write request of code L-C0012 = 2.5sec:
N10:0 0101 TXID + status 01 (order No.) + 01(status): Transaction successful
N10:1 0008 Port + size 00 (port) + 08 (size, 8 bytes user data)
N10:2 8E1C Ser vice + Mac ID 8E (service) + 1C (Mac ID): 28 (node address)
N10:3 000C Lcode 000C: L-C0012 (a cceleration time )
N10:4 0000 Subcode No subcode
N10:5 61A8 LOW word value 25000 ≡ 2.5 sec
N10:6 0000 HIGH word value 0000: End of user data
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