Rice Lake 118788, Руководство пользователя

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Installation 13
2.8.2 Digital I/O
The Digital I/O can be configured as either digital inputs or digital outputs as determined by the Digital I/O menu
(see Section 3.7.3 on page 42). The inputs are active (on) with low voltage (0 VDC) and can be driven by TTL or
5V logic without additional hardware. Use the Digital I/O menu (see Section 3.7.3 on page 42) to configure the
digital inputs. LEDs on the CPU board light when digital inputs are active (see Figure 2-10).
Digital outputs are typically used to control relays that drive other equipment. Outputs are designed to sink not
source, switching current. Each output is a CMOS circuit, capable of sinking 24 mA when active. Digital outputs
are wired to switch relays when the digital output is active (low, 0 VDC) with reference to 5 VDC supply. LEDs on
the CPU board light up when the digital outputs are active (see Figure 2-10).
Connector Pin Signal
J3 1 +5V
2 Ground
3 DIG I/O 1
4 DIG I/0 2
5 DIG I/O 3
6 DIG I/O 4
Table 2-4. J3 Pin Assignments (Digital I/O)
2.8.3 Network Connection to Counterpart
Counterpart has an onboard Ethernet connection. Its wireless connectivity is made possible with the optional
Lantronix
®
1
WiPort wireless networking device (PN 108671). Refer to the WLAN installation instructions (PN
108680) included with the option card for installation and configuration instructions.
LED
LED
JP1 JP2 JP3 JP4 JP5 JP6
PC1
WD1 R
U
N
P
G
M
PWR
+5 +3.3v
C3
ON SW
ISP RST
Port 3 LED
Port 1 & 2 LED lights
Port 3 LED
Ethernet LED Light
Figure 2-10. LED Light Locations
1. Lantronix
®
is a registered trademark of Lantronix Inc.
Note
The Ethernet LED light is on when connected at 100 mb/s and is off when connected at 10 mb/s.
2.9 Enclosure Reassembly
Once the cabling is complete, position the top plate over the enclosure and reinstall the four screws.
2.10 CPU Board Removal
If you must remove the Counterpart CPU board, use the following procedure:
1. Disconnect power to the scale.
2. Disconnect power supply cable from connector J12 on the
Counterpart CPU board.
3. Disconnect the wires at the following connectors: J1, J2, J3, J4 and J5 and J13 if equipped.
4. Remove the six screws connecting the CPU board and then lift the board out of the enclosure.
To replace the CPU board, reverse the above procedure. Be sure to reinstall cable ties to secure all cables inside the
indicator enclosure.