Veris Industries H8163-CB Install - Manual (Page 3)

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H8163-CB INSTALLATION GUIDE
CONFIGURATION
This section describes the communications settings you must make to the H8163-CB.
When daisy-chaining Modbus devices, follow these guidelines:
• Connect up to 63 H8163-CB devices on a single daisy chain.
• Each H8163-CB device on the daisy chain must have a unique address.
Before connecting the H8163-CB to the RS-485 communication wires,
set the address according to directions on this page.
• Set the wiring type, baud rate, and parity according to directions in
“Selecting Wiring Type, Baud Rate, and Parity Settings” on this page. The
settings for each H8163-CB must match the other devices on its daisy
chain.
• For RS-485 cables, use shielded, twisted-pair wire (Belden Cable 1120A or
equivalent).
• Terminate the last device on the daisy chain to ensure reliable
communication per the RS-485 standard (120 Ω nominal impedence).
Selecting The Network Address DIP Switches
Use the network address DIP switches to select the network address. Each H8163-CB
on a daisy chain must have a unique network address (from 1 to 63). Devices with the
same address as another on the chain will be unable to communicate.
Always set the address before you install the H8163-CB in the energy meter and
before you connect the energy meter to the daisy chain.
Each of the six DIP switches has a unique address value. The Modbus Addressing
section on page 6 lists DIP switch positions for specific addresses.
Network Address DIP Switch Values
Switch Value
1 1
2 2
3 4
4 8
5 16
6 32
Selecting Wiring, Baud Rate, and Parity Settings
Parameter Switch Number and Setting
1 2 3 4 5 6
Wire
Type 2-wire - On
4-wire - Off
Baud
Rate
2400 - Off Off
4800 - On Off
9600 - Off On
19200 - On On
Parity
None - Off Off
Even - On Off
Odd - On On
Setting the Communication DIP Switches
Switch 1 is unused. Always leave it in the OFF
position.
This example illustrates the default switch settings
for a 2-wire device that uses 9600 baud rate with
no parity.
Wiring Baud Parity
RS-485 COMMUNICATIONS SETUP
Daisy Chain Maximum Distances
The maximum number of devices allowed on a single daisy chain is determined by
combining the baud rate, the length of the daisy chain, and the types of RS-485
devices (2-wire/4-wire) on the chain. The RS-485 interface will support daisy chains
that fall within the specifications shown below.
4-Wire Daisy Chain Maximum Distances
Baud Rate Maximum Distances
1-16 Devices 17-32 Devices
2400 10,000 ft. (3048 m) 5000 ft. (1524 m)
4800 10,000 ft. (3048 m) 5000 ft. (1524 m)
9600 10,000 ft. (3048 m) 4000 ft. (1219 m)
19200 5000 ft. (1524 m) 2500 ft. (762 m)
2-Wire Daisy Chain Maximum Distances
Baud Rate Maximum Distances
1-8 Devices 9-16 Devices
2400 10,000 ft. (3048 m) 5000 ft. (1524 m)
4800 10,000 ft. (3048 m) 5000 ft. (1524 m)
9600 10,000 ft. (3048 m) 4000 ft. (1219 m)
19200 5000 ft. (1524 m) 2500 ft. (762 m)
Wiring the Connector
1. Remove the connector from the RS-485 communication terminals of the H8163-
CB.
2. Wire the communications connector as shown on page 4 (2-wire or 4-wire
communication). The wire type setting in the communication DIP switch must
match this wiring type.
3. Use a small, flat-blade screwdriver
to tighten the connector screws.
Apply the correct torque: 0.37-0.44
ft·lb (0.5-0.6 N·m).
4. Replace the connector on the RS-485 communication terminals of the H8163-CB.
5. If the H8163-CB is the last device in a daisy chain, terminate it to ensure reliable
communication per the RS-485 standard (120 Ω nominal impedence).
Red
Black
Gray
0.37–0.44 ft•lb
(0.5–0.6 N•m)
Use 14-24 gauge wire