Mettler Toledo IND570 Manual De Instalación página 28

1.9.5. PLC Interfaces
The IND570 PLC interface options include Analog Output, ControlNet, DeviceNet, EtherNet/IP,
Modbus TCP, PROFIBUS DP, and PROFINET. Only one PLC option can be used at a time.
Additional details about each of these interfaces, the IND570 PLC Interface Manual, programming
examples and profiles, can be found at www.mt.com/IND570.
1.9.5.1. Analog Output
Analog Output refers to the representation of an internal system variable using a proportional
electrical signal. Analog Output can be used to transmit a measured value, such as the gross or net
weight.
0-10 volt DC and 4-20 mA signals are provided. Only one signal can be used at a time.
1.9.5.2. ControlNet
The ControlNet option enables the IND570 terminal to communicate to ControlNet Programmable
Logic Controllers (PLCs) through direct connection to the ControlNet network.
Due to space constraints, the ControlNet interface option can only be used with panel-mount
versions of the IND570 terminals.
1.9.5.3. DeviceNet
The IND570 DeviceNet option enables the terminal to communicate to a DeviceNet network.
DeviceNet is an RS-485-based network using CAN chip technology. This network was created for
bit and byte-level devices. The network can be configured to run up to 500Kbits per second
depending on cabling and distances. Messages are limited to 8 un-fragmented bytes. Any larger
message must be broken up and sent in multiples. The IND570 implementation of DeviceNet does
not support fragmented messages – all messages are 8 bytes or shorter. The network is capable of
64 nodes including the master, commonly called the scanner.
1.9.5.4. EtherNet/IP
This internally installed PCB module enables the IND570 terminal to communicate to EtherNet/IP
Programmable Logic Controllers (PLCs) through direct connection to the EtherNet/IP network at
either 10 or 100 M
messaging (message exchange) are supported by the IND570 software.
1.9.5.5. Modbus TCP
In IND570, the Modbus TCP is made available through the same internal PCB option that supports
the EtherNet/IP protocol. Modbus/TCP is used to establish master-slave/client-server
communication between intelligent devices. It is an open standard network protocol, widely used in
the industrial manufacturing environment. The ModbusTCP protocol takes the Modbus instruction
set and wraps TCP/IP around it.
1.9.5.6. PROFIBUS DP
The PROFIBUS option card enables the IND570 terminal to communicate to a PROFIBUS DP master
according to DIN 19 245 and programmable logic controllers such as Siemens S7 series. The
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speed. Both implicit messaging (real-time I/O messaging) and explicit
BPS
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