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58 Installation Guide APC Silcon 480kW 400V UPS
990-4053
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6.4.1.1 Connections Without Converter
Connect a 25-pin female Sub-D and a 9-pin male Sub-D connector with a 3-wire shielded cable,
as shown in the table below. Connect shield at one end only.
Pin Connection for Interconnection Cable (without converter):
6.4.1.2 Connections With Converter
Connections to be made according to converter manual.
Pinconnection example only:
The ME800A-R2 must be set up as a DCE with no RTS/DTR control.
The interconnection cable between the two ME800A-R2 boxes is a 4-wire twisted pair
telephone cable with or without shield. The shield improves noise immunity but reduces
maximum communication distance.
Host (DTE) Remote Display (DTE)
25-pin female
pin No.
9-pin male
pin No.
2 (TXD) 2 (RXD)
3 (RXD) 3 (TXD)
7 (GND) 5 (GND)
House (shield) No Connection
Pin Connections for cable
from host to ME800A-R2.
Pin connection for cable from
ME800A-R2 to Remote Display
Host
(DTE)
ME800A-R2
(DCE)
ME800A-R2
(DCE)
Remote Display
(DTE)
25-pin female
pin No.
25-pin male
pin No.
25-pin male
pin No.
9-pin male
pin No.
2 (TXD) 3 3 2 (RXD)
3 (RXD) 2 2 3 (TXD)
7 (GND) 7 7 5 (GND)
House (Shield) No connection No connection House (Shield)