S5-95U, SINEC L2 S5-95U Communications Matrix and Emulation of Transmission
Types on Layer 2
Emulation of Types of Data Transmission for the S5-95U on Layer 2 (Continued)
L2 Source
Addresses
Length of L2 Frame
(in Net Data)
L2 SAPs (Default
SAP not Permitted)
L2 FrameType of Data
Transmission
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a
ZP Master
-
When sending:
• Local SAP of ZP
master = 61
• Remote SAPs of
ZP slaves =
0 to 62
(configurable in
DB1)
Send frame of ZP
master:
• 0 to 242 bytes
Response frame of ZP
slave:
• 0 to 244 bytes
permitted
Send frame of ZP
master:
• SRD low
Response frame from
ZP slave:
• RESPONSE low
and RESPONSE
high permitted
ZP Slave When receiving:
• All source addresses
permitted
When receiving:
• Local SAP of ZP
slave = 61
• Remote SAPs of
ZP master = 0
to
62 permitted
Response frame of ZP
slave:
• 0 to 242 bytes
Receive frame from
ZP master:
• 0 to 242 bytes
permitted
Response frame of ZP
slave:
• RESPONSE low
Receive frame from
ZP master:
• SRD low only
permitted
Layer 2 Services Send frame:
• SDA low/high
• SDN low/high
• SRD low/high
Receive frame:
• SDA low/high
• SDN low/high
• SRD low/high
Send frame:
• 0 to 242 bytes
Receive frame:
• 0 to 242 bytes
permitted
When receiving:
• All source addresses
permitted
When sending:
• Local SAP = 33 to
54, 64 (default
SAP permitted)
• All remote SAPs
permitted
When receiving:
• Local SAP = 33 to
54, 64 (default
SAP permitted)
• All remote SAPs
permitted
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Special Feature: If an S5-95U is in the STOP mode, receiving of a frame via the standard
connection (not broadcasting) and the PLC-to-PLC connection (local SAP=56
and 2 to 32) is acknowledged on layer 2 with ”UE” (FDL/FMA 1/2-User Error) if
the connection was properly configured in the local S5-95U.
EWA 4NEB 812 6112-02
F-3
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