The PLC-5 controller is in the central position of the control system, integrates the existing and future systems through ethernet/ip, ControlNet and DeviceNet, and provides the interconnection between SLC 500, ControlLogix and Micrologix processors. Because the PLC-5 processor has built-in network connection, PLC-5 makes the control structure flexible enough to establish economic connection between a wide range of equipment.
The minimum configuration of a PLC-5/1771 control system includes a programmable controller module and some input and output modules and power supply modules installed on a rack. The controller with communication port can be selected as required. PLC-5 can reach 512 input and output points at most. All PLC-5 processors have remote I / O interfaces. Some PLC-5 processors have local extended I / O interfaces. Some PLC-5 processors have local extended I / O interfaces. Some PLC-5 processors have a ControlNet communication interface. If you want to provide a DeviceNet I / O scanner port for the system, you must add a DeviceNet scanner module (1771-SDN).
PLC-5 is a large, stable and early product of Rockwell Automation
Worldwide, more than 450000 sets of PLC-5 and more than 10000000 PLC-5 1771 i/o modules are operating stably.
PLC-5 has a module MTBF index of more than 400000 hours.
PLC-5 hot standby system can be used for occasions with high control safety requirements.
In recent years, PLC-5 has added ControlNet, DeviceNet, ethernet/ip and other industrial network interface functions.
PLC-5 controllers can be divided into the following categories:
1. Classic PLC-5 controller
There are several CPU models:
Product order number (model) corresponding to processor name
PLC-5/10 1785-LT4
PLC-5/12 1785-LT3
PLC-5/15 1785-LT
PLC-5/25 1785-LT2
2. Enhanced PLC-5 controller
There are several CPU models:
1785-L11B、1785-L20B、1785-L30B、1785-L40B、1785-L60B、1785-L80B
DH+ or (and) remote input / output communication interface (Remote I/O) is generally provided.
3. Ethernet PLC-5 controller
There are several CPU models:
1785-L20E、1785-L40E、1785-L80E
For the above three CPUs, the Ethernet interface is a built-in standard configuration. DH+ or Remote I / O interface is also provided
4. Control network PLC-5 controller
There are several CPU models:
1785-L20C15、1785-L40C15、1785-L46C15、1785-L80C15。
The above four CPUs have built-in ControlNet network communication function, and also provide dh+ and remote input / output communication connection function.
5. Protective PLC-5 controller
There are several CPU models:
1785-L26B、1785-L46B、1785-L46C15、1785-L86B。 The safe controller allows the user to set access to "critical" or "private" program areas, protected memory areas, protected input and output, etc., and can also restrict the operation of the controller. Users can be classified and managed by programming software, so that they have different system permissions.
Except for the classic PLC-5 controller, the above five controllers are all equipped with 25 pin serial communication port.
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