Horner APG XLt OCS HE-GSM04 - Manual (Page 11)

MAN4005-04-EN GPRS / GSM MODEM Configuration PAGE 11
GPRS Configuration
GPRS Access Point Configuration
The GPRS Access Point Configuration is mandatory and the fields are to be filled according to the
information obtained by your Network Service Provider.
Select Get Access Point Configuration checkbox configure registers instead of fixed values.
GPRS Packet Assembler/Disassembler
Configuration
Client mode: In this mode the OCS behaves as client and connects to a specific server (Server
IP/Port address to be specified in modem ladder block input).
Server mode: In this mode the OCS behaves as server and accepts connection requests from
specified client. Client IP addresses are to be specified in modem ladder block input.
•
For added security, the IP address for Cscape connectivity with a single device can also
be specified. Enter the IP address of the device to connect to, for CsCAN connectivity
directly in CsCAN Source IP Addr field or select the Get Source IP Address from
Register checkbox and specify a %R register Address (32bit). When the IP address is
mentioned, Cscape will connect to only that address and will reject connection requests
from all other IP addresses.
Note: If the CsCAN Source IP Addr is 0.0.0.0, then the connection from any address will be
accepted.
Note: Server mode of operation is supported only when SIM with a static IP address or SIM
having semi-static IP address with VPN is used.
•
CsCAN Source Port: When the modem is configured in server mode, the incoming
connection request from any client will be accepted only via this port address. For Cscape
connectivity this should be configured as 10001. This can be set to any value for peer to
peer and data exchange provided the Server/Client port number is same. If Cscape
connectivity is also required with data exchange/peer to peer connectivity, set this port to
10001.
Transmission of GPRS packet can take place on reaching packet size or occurrence of timeout
or when forward character is found in the internal transmit buffer.
•
Block Size: GPRS packet size in number of bytes.
Timeout Period: Transmission of G
•
PRS packet to destination address will take place on
•
,
S,
•
his checkbox enabled, forward character will be sent
together with GPRS packet.
occurrence of timeout mentioned.
Forward Character: Transmission of GPRS packet will take place on finding character
configured here. This value is to be entered in Hex value of ASCII character. For example
if ‘0D’ is configured, the GPRS packet is transmitted when Line Feed character is put in
the transmit buffer. This feature can be used to implement custom protocol over GPR
such that the GPRS packet is sent after putting this character in the transmit buffer.
Send Forward character: If t
Additional ladder programming must be written to establish connection with remote server/client over GPRS service using
‘communication operation’ ladder blocks .
Page 11 of 62 ECN # 956