80S-2080F480F4-680F5 User’s Manual - 第661页
11 Station Extensions/Options SIPLACE 80S-20/F4/F4-6/F5 User’s M anual 11.9 GEM Interface Edition 03/98 from Software Version SR.404.xx 11 - 64 11.9.2. 4 SECS Param e ters CAUTION The followi ng param eters must be prese…
SIPLACE 80S-20/F4/F4-6/F5 User’s Manual 11 Station Extensions/Options
Edition 03/98 from Software Version SR.404.xx 11.9 GEM Interface
11 - 63
l Control (see also Section 11.9.2.6 "Status Display")
- Off-line
It is not possible to send or receive messages.
- Local
Under the Load placement programs menu the user can upload placement programs from the sta-
tion to the host or download placement programs from the host to the station.
No placement programs can be downloaded by the host to the station.
- Remote
Under the Load placement programs menu the user can upload placement programs from the sta-
tion to the host.
l Spooling (see also Section 11.9.2.6 "Status Display")
- Yes
If the connection to the host is lost, SIPLACE will collect in a spooling file all messages intended for
the host. Once the connection is re-established, the host can pick up these messages from SIPLACE.
The quantity of messages which can be stored is limited by the size of the spooling file (20 MB).
- No
If the connection to the host is lost, all messages intended for the host will be lost.
l Action when spooling file full
- Overwrite oldest
If there is no more space available for the spooling file, the oldest message stored is overwritten by
the latest and current message.
- Ignore new messages
If there is no more space available for the spooling file, all new incoming messages will be discarded.
l Between two measurements or limits variables
Not currently relevant.
11 Station Extensions/Options SIPLACE 80S-20/F4/F4-6/F5 User’s Manual
11.9 GEM Interface Edition 03/98 from Software Version SR.404.xx
11 - 64
11.9.2.4 SECS Parameters
CAUTION
The following parameters must be preset in order to optimize the transfer from the host to the line computer.
The values specified in Fig. 11.9.5 are tested and recommended parameters and should be entered.
PLEASE NOTE
Changing the parameters has the following effects on the day-to-day operation of the GEM interface:
When a timeout value or the TCP port number is changed, the GEM link to the host is interrupted for a short
time.
The GEM software is closed down when the IP address or IP screen is changed.
The GEM software cannot be used until the station is switched on again.
Fig. 11.9.5 SECS parameters
SIPLACE 80S-20/F4/F4-6/F5 User’s Manual 11 Station Extensions/Options
Edition 03/98 from Software Version SR.404.xx 11.9 GEM Interface
11 - 65
The following parameters can be set:
l T3: Reply timeout
- When a primary message is sent to the host, the station waits up to T3 seconds for the secondary
message from the host.
- Range of values: 1 - 120 seconds
l T5: Connect separation timeout
- This determines the waiting time between successive attempts to establish a connection. This is only
important if the station has been configured as the ACTIVE ENTITY.
- Range of values: 1 - 240 seconds
l T6: Control transaction timeout
- When the transmitter sends a Connect.req or Linktest.req message to the host, the station waits up to
T6 seconds for the Connect.rsp or Linktest.rsp message. The TCP/IP link is then interrupted.
- Range of values: 1 - 240 seconds
l T7: NOT SELECTED timeout
- Once the TCP/IP connection has been established, the station configured as the PASSIVE ENTITY
waits up to T7 seconds for the Select.req message from the host. The TCP/IP link is then interrupted.
A successful exchange of Select.req and Select.rsp messages forms the basis for conversion of the
TCP/IP connection into an HSMS connection.
- Range of values: 1 - 240 seconds
l T8: Network intercharacter timeout
- Reception of an individual HSMS message must not take longer than T8 seconds. Otherwise the
TCP/IP link will be interrupted.
- Range of values: 1 - 120 seconds
l CE: Connection Establishment timeout
- After sending a TCP/IP connect command, a station which has been configured as an ACTIVE
ENTITY waits up to CE seconds for a connection to be established or for a status message. After this
time it is assumed that the command was not received correctly.
l CA: Circuit Assurance
- This determines the waiting time between sending successive Linktest.req messages. These mes-
sages check that the HSMS connection is working correctly. If CA=0, no Linktest.req messages are
sent.
l TG: Grace period
- While a SECS-II connection is being established, the SDR component of Siplace GEM buffers all the
messages to be sent to the host. If the SECS-II connection can be established within TG seconds, the
buffered message will be sent to the host. Otherwise they are rejected by the SDR component and
have the status F_DELV.