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model 3000 Ethernet Module / DS Connection Module Operation Manual
Chapter 7 Application Interface
7
7.1.2
Structure of dual Ethernet socket information
Status information on each dual Ethernet socket is shown in figure 7-2.
Figure 7-2 Status Information on Each Dual Ethernet Socket
Conditions where each of the following bits takes the value "1"
TCP: Dual Ethernet socket TCP used
UDP: Dual Ethernet socket UDP used
AOP: Dual Ethernet socket active open (TCP only)
POP: Dual Ethernet socket passive open (TCP only)
CON: Dual Ethernet being connected (TCP only)
RCV: Data
received
RCL: Disconnected by opposite station during connection process (TCP only)
Conditions where each of the following bits takes the value "0"
TCP: Dual Ethernet socket close requested
UDP: Dual Ethernet socket close requested
AOP: Dual Ethernet socket close requested
POP: Dual Ethernet socket close requested
CON: Dual Ethernet socket close requested or disconnected by opposite station
RCV: No data received
RCL: Socket
close
requested
TCP UDP
AO
P
POP CO
N
RCL
reserve
F E D C B A 9 8 0
RC
V
Summary of Contents for 3000 series
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