7.7
Date Code 20081022 Instruction Manual SEL-787 Relay
Communications
Communications Protocols
Figure 7.7 SEL Cable C387—SEL-787 to SEL-3010
Communications Protocols
Protocols
Although the SEL-787 supports a wide range of protocols, not all protocols
are available on all ports. In addition, not all hardware options support all
protocols.
Be sure to select the correct hardware to support a particular protocol. For
example, if Modbus
®
TCP is necessary for your application, be sure to order
the Ethernet option for Port 1. Table 7.3 shows the ports and the protocols
available on each port.
SEL-787 Relay
DTE*
9-Pin Male
D Subconnector
DCE**
9-Pin Male
D Subconnector
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
DCD***
RXD
TXD
GND
RTS
CTS
GND
+5 Vdc (IN)
RXD (OUT)
TXD (IN)
Not Used
GND
Not Used
RTS (IN)
CTS (OUT)
GND
Pin
Func.
Pin
Func.
Pin # Pin #
SEL-3010 Event Messenger
*DTE = Data Terminal Equipment
**DCE = Data Communications Equipment (Modem, etc.)
***DC Voltage (+5 V) not available on front-panel EIA-232 port
Table 7.3 Protocols Supported on the Various Ports
Supported Protocol
PORT F SEL ASCII and Compressed ASCII Protocols, SELBOOT, File Transfer
Protocol, Modbus RTU Slave, C37.118 Protocol (synchrophasor data), and
Event Messenger
PORT 1 Modbus TCP/IP, FTP, TCP/IP, IEC 61850, DNP3 LAN/WAN and
Telnet TCP/IP (SEL ASCII, Compressed ASCII)
a
a
PORT 1 concurrently supports one Modbus, two FTP, two Telnet, six IEC 61850, and
three DNP3 LAN/WAN sessions.
PORT 2 All the protocols supported by PORT 3
PORT 3 SEL ASCII and Compressed ASCII Protocols, SEL Fast Meter, SEL Fast
Operate, SEL Fast SER, SEL Settings File Transfer, SEL M
IRRORED BITS,
DNP3, Modbus RTU Slave, C37.118 Protocol (synchrophasor data), and
Event Messenger
PORT 4 All the protocols supported by PORT 3 and DeviceNet
NOTE: FTP, Modbus, and DeviceNet
protocols ignore the hide rules of the
settings.
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