
1–4 Network Layers
Publication
17706.5.16 - October 1996
Unlike a master/slave relationship, a floating master relationship
does not require the current master to poll each node to grant
permission to transmit. Therefore, it provides a more efficient
network because there is less overhead—i.e., time—per transaction.
RS232C link
(50 cableft. max.)
RS232C link
(50 cableft. max.)
DH+ link
1771KG
PLC2/30 processor
PLC3 processor
cat. nos. 1775KA or S5
PLC5/250 processor
5130RM1
modem
modem
DH interface module
cat. nos. 1771KE, KF
PLC2 family processor
cat. no. 1771KA2
1770KF2
1770KF2
DH link
1785KA
T60 industrial workstation running
ControlV
iew software
personal computer
SC SC SC SC SC SCSC
SC
= station connector; 1770SC
modem
modem
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