13 PCA-6781 User Manual
Chapter 2 Installation
2.5.6 COM2 RS-232/422/485 Select (J5)
2.6 Installing SODIMMs
1. The procedure for installing SODIMMs appears below. Please follow these
steps carefully.
2. Make sure that all power supplies to the system are switched off
3. Install the SODIMM card. Install the SODIMM so that its gold pins point down
into the SODIMM socket.
4. Slip the SODIMM into the socket at a 45 degree angle and care- fully fit the bot-
tom of the card against the connectors.
5. Gently push the SODIMM into a perpendicular position until the clips on the
ends of the SODIMM sockets snap into place.
6. Check to ensure that the SODIMM is correctly seated and all connector contacts
touch. The SODIMM should not move around in its socket.
Table 2.8: COM2 RS-232/422/485 Select
Pin Function
1-2 (default) RS-232
3-4 RS-422
5-6 RS-485
1
2
3
4
5
6
1
3
5
1
3
5
2
4
6
2
4
6
Note! The modules can only fit into a socket one way. The gold pins must
point down into the SODIMM socket.
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