184
Environment-resistive Terminals (IP66)
Section 5-3
Components of the DRT1-HD16C and DRT1-HD16C-1
Internal Circuits
The following diagram shows the internal circuits for the DRT1-HD16C Envi-
ronment-resistive Terminal (NPN).
0
1
2
3
4
5
6
7
MS
NS
2
1
5
0
1
2
3
4
6
7
8
9
5
0
1
2
3
4
6
7
8
9
DR0
OFF
ON
OFF
ON
DR1
OFF
OFF
ON
ON
Datarate
125kbps
250kbps
500kbps
Not in use.
Node Address
ADR
DR
0
1
8
9
10
11
12
13
14
15
DIP switch pins 1 and 2:
Baud rate
(Refer to page 179)
Rotary switches 1 and 2:
Node address
(Refer to page 179)
Input indicators
Indicates the input status of each input.
(Lit when the input is ON.)
DeviceNet indicators
(Refer to page 312.)
Input connector
External power
supply connector
DeviceNet communications
connector
1
2
4
2
1
3
4
2
3
1
4
5
DRAIN
V
−
V+
CAN L
CAN H
CN1
(Communications
connector)
3
V
G
CN3
Physical
layer
Photo-
coupler
DC-DC
converter
(Isolated)
DC-DC
converter
(Not
isolated)
Photo-
coupler
Photocoupler
Photocoupler
0 V (for internal circuits)
0 V
(for inputs)
CN2
(External power
supply connector)
24 V
(for inputs)
Input 0
Input 1
24 V
(for internal
circuits)
In
te
rnal circ
uit
ry
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