Chapter 7 Automatic Sending/Receiving function (ASR)
There are two ways for EH-ETH2 (specified as active) to open ASR connection.
1. To send a request to open automatically after initializing of EH-ETH2 completed.
2. To send a request to open by user program.
Caution
ASR information must be set correctly to open ASR connection.
Table 7.1 The way to open ASR connection (Active port)
Conditions to open ASR connection
Operation
Initializing (EH-ETH2 is initialized when ;)
1) At Power ON
2) Press the reset button
3) Software initializing (user program required)
Set 1 to “Request to open bit” (user program required)
A Request to open connection will be sent
to specified station
Caution
- In case of initializing, you do not need user program.
- In case you need to open the connection manually, you must use Status Register (SR) and Control Register (CR) with
FUN201 command for EH-CPU or SCRW command for EHV-CPU in your user program. Please refer to "Chapter 8
Register Structure" in details about registers.
- In this manual, register and each bit are often described with abbreviation. Refer to "Chapter 8 Table 8.1 The list of
registers (page 8-12)" for each abbreviation.
- In this manual, register and each bit are described as below format.
[register abbreviation].[bit abbreviation]
Ex. Connection control register (CNCR) connection 1 open request bit (OPN1)
CNCR.OPN1
If a connection is opened by another station specified as active, the passive station is only waiting. So you
do not need any program in the passive station.
7-6
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