Balluff BTL7-T500 Series, Configuration Manual

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4
Configuration (continued)
4.10.2 Read and Write telegrams
Data exchange using MSAC_C2 differs from MSAC_C1
only in the SAP number used and the Idle telegrams
inserted by the master.
4.10.3 Telegram Abort (Abort.req)
For the occupied SAP to be usable again, the connection
opened by the master is released again using the Abort
command. The slave does not respond to this message.
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Bytes 9…n–2 Byte n–1 Byte n
SD LE LEr SD DA SA FC DSAP SSAP DU FCS ED
16#68 X X 16#68 16#8x 16#8x X 16#30 16#32 SeeTab. 4-20 X 16#16
Tab. 4-19: Abort.req
Byte No. Data type Meaning Value
0 Byte Function Number (service code) 16#58 = Abort 16#58
1 Byte Subnet (This parameter designates the source of the Abort.req) 0 = NO
1 = SUBNET-LOCAL
2 = SUBNET-REMOTE
3…255 reserved
2 Byte 2#RRII CCCC
Bit 0…3 (CCCC): Reason Code
Bit 4…5 (II): Instance ID
Bit 6…7 (RR) reserved
II: 2#00 = FDL
2#01 = MSAC_C2
2#10 = USER
2#11 = reserved
8…9 2 × Bytes Supported Profile features 16#00 16#00
10…11 Word Profile ident number 16#0303
12 Byte Source API 16#00
13 Byte Destination API 16#00
Tab. 4-20: Abort.req
BTL7-T500-…
Configuration Guide