Leviton A8812, Инструкция по установке и эксплуатации

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8 MODBUS
8.6 Manual Device Add Options
Modbus devices may be added manually by clicking on the “add” link on the bottom of the modbus device list
page. This option is intended for use when adding devices to the configuration profile prior to installing the
physical hardware, or configuring Modbus/TCP devices that will automatically populate in the Modbus device list.
The manual setup page has several options that must be configured before the DAS will recognize the Modbus
device. The options are as follows:
Modbus Address: The Modbus device address must be supplied. Note: when configuring a device on a remote
Modbus/TCP gateway, the Modbus address of the remote device must not be the same as any address on the
local RS485 loop.
Modbus/TCP Gateway IP: This option allows the DAS to log data from a remote Modbus device that is attached
to the LAN via a Modbus TCP gateway device such as an EGX or Moxa gateway. For local Modbus devices
attached to the DAS RS485 port, use “127.0.0.1”
Modbus/TCP Gateway Port : If a remote Modbus/TCP gateway is used, the TCP port of the remote gateway
must be specified. The default TCP port is 502 on most gateways. For local Modbus devices attached to the DAS
RS485 port, use 502.
Device Name: You must provide a name for the Modbus device to identify it in the device list. This should be
something that will identify the meter location and purpose.
Device Type: This menu will allow the selection of any built in driver or any Modbus Framework template that is
available on the DAS. It is important to select the driver or template that matches the Modbus device.
Note: Up to 32 remote Modbus/TCP devices may be added to the system. Because of addressing the devices
on the Energy Monitoring Hub device list, each Modbus/TCP device must have a unique ID in the same way that
Modbus/RS485 devices do.
There is no hard limit on the number of Modbus/RS485; however typical systems should not exceed 64 total
devices for performance reasons. Depending on the Modbus/RS485 device, the RS485 line may limit the system
to 32 physically attached meters, but can be expanded with the use of either ModHoppers or RS485 repeaters.
The Modbus addressing system on some meters will only allow addresses between 1 and 64, the Modbus
Protocol requires the address be between 1 and 256.
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