Detailed descriptions
16.1 Motherboard
SIMATIC HMI IPC677C
Operating Instructions, 04/2013, A5E02722710-04
201
PROFINET LAN X3 Port P1, P2, P3
PROFINET interface
1
/('
/('
Pin no.
Short description
Meaning
Input / Output
1
RD+
Receive data *
Input
2
RD-
Receive data *
Input
3
TD+
Transmit data *
Output
4, 5
1)
SYMR
Internal with 75 Ohm terminating resistor
_
6
TD-
Receive data *
Output
7, 8
1)
SYMT-
Internal with 75 Ohm terminating resistor
_
S
Shield
LED 1
Lit green: link
LED 2
Lights up yellow: activity
* Auto negotiation and auto crossover supported
1
Optional product variant
Ethernet RJ45 connection, X1, X2
Ethernet RJ45 connection
/('
/('
Pin no.
Short description
Meaning
Input / Output
1
BI_DA+
Bi-directional data A+
Input / Output
2
BI_DA-
Bi-directional data A-
Input / Output
3
BI_DB+
Bi-directional data B+
Input / Output
4
BI_DC+
Bi-directional data C+
Input / Output
5
BI_DC-
Bi-directional data C-
Input / Output
6
BI_DB-
Bi-directional data B-
Input / Output
7
BI_DD+
Bi-directional data D+
Input / Output
8
BI_DD-
Bi-directional data D-
Input / Output
S
Shield
–