IEC 60870 Functions of the FP Web-Server | FP Web-Server V2.11 |
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13.1 IEC 60870 General Functions
The following connections to the FP Web-Server are possible:
1.The PLC is connected to the FP Web-Server via a 3-pin RS232C up to 115200 bps (see PLC connection to the FP Web-Server (see page 162)).
2.IEC 60870-5-101 Unbalanced Communication (9-pin RS232C of the FP Web-Server unit)
-directly via RS232C to the central station
-Multipoint via C-Net (RS485) adapter (AFP8536) up to 19200 bps
-Multipoint via FP Modem-EU (V.23 via twisted pair cable) with 1200 bps
-PSTN modem dialup connection (extension specified by OHP). This connection receives calls from and/or dials out to the central station. Analog modem, ISDN adapter or GSM module can be used.
3.IEC 60870-5-104 communication (via RJ45 Ethernet connector of the FP Web-Server unit)
-via Ethernet
-TCP/IP communication also possible via PPP-Server and dialup modem connections
Comment:
If an IEC 60870-5-104 Ethernet connection is established from the central station to the FP Web-Server, an IEC 60870-5-101 connection via RS232C is impossible. As soon as there is no Ethernet connection, the IEC 60870-5-101 connection can be established via RS232C again.
•Using IEC 60870 communication the PLC needs to execute special IEC 60870 function blocks. These PLC function blocks are delivered as an FPWIN Pro library together with the FP WEB Configurator Tool. The IEC 60870 FPWIN Pro library, accompanying examples and interoperability documentation can be installed from the FP WEB Configurator Tool CD-ROM. For details refer to the Library's online help (see page 156).
•If the IEC 60870 functions are to be used (checkbox "Enable IEC60870" is active), disable standard FP Web-Server's functions like http, email, PPP server or port function (see page 104). If these standard functions are enabled at the same time as the IEC 60870 protocol, the reaction time and performance of the FP Web functions may slow down.
•If the 9-pin RS232C port is set up for IEC60870-5-101 communication, MEWTOCOL communication can take place. The IEC60870 polling from the central station must be stopped before MEWTOCOL communication can be used. MEWTOCOL commands are sent directly to the PLC. This version only allows short (standard) MEWTOCOL commands.
