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Chapter 2 Specification of Communication port for CPU module

2 – 6

“Specified” and “Optional” for the other station

Message communication can be achieved with any station if TCP/IP-Active open is specified or UDP/IP-receiving is

specified.

Transmitting Broadcast

When “Transmitting and receiving”, or “Transmitting only” is specified using UDP/IP, message data can be exchanged

between the logical ports which satisfy the following requirements.

(1) Nodes with the same network address (Multiple other stations)

(2) Nodes with the same logical port No., which can perform the UDP/IP communication (Multiple other

stations)

(3) Nodes in status which can receive message (Multiple other stations)

This is called “Simultaneous transmission” or “Transmitting Broadcast”.

Ethernet

Application

【

Transmitting Broadcast

】

Figure 2.6 Transmitting Broadcast

Transmitting type

There are the following 2 transmitting types.

Table 2.6 Transmitting type for ASR communication

Transmitting type Description

1 Event transmitting When the transmitting trigger bit specified is turned from OFF to ON, data in I/O memory

specified as the transmitting area is transmitted

To transmit data, the event transmission request flag should be ON for 120ms or longer

and OFF for 120ms or more.

Event transmitting request flag

OFF

: Trigger bit OFF time (Min)

: Trigger bit ON time (Min)

OFF

, T

≥

120ms

OFF

2 Cyclic transmitting Data in I/O memory specified as the transmitting area is transmitted at the interval (1 –

65,535 × 1sec, 1 – 65,535 × 40 ms) specified with the cyclic transmitting timer in a

constant cycle.

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