Description
CI858K01 base plate consists of three important parts: (1) installed circuit panel (2) metal backplane (3) plastic shell, circuit board,
It is called “base plate” and contains module insertion holes. The metal back plate has four holes to install the base plate and the fixed slot for installing the module
The slot hole of the plastic housing to the circuit board, module connector and fastener, printed label describing the base plate, serial number,
The slot number label provides protection. There are three basic types of substrates discussed in this chapter:
■ CPU
■ Expansion
■ Remote
Base plate: the circuit board of the reference base plate. CI858K01 contains the base plate circuit and the slot for inserting modules.
Rack: The term refers to an assembly consisting of base plate, power supply and other modules.
Rack No.: The system requires more than one rack, and each rack is assigned a unique number, which enables the CPU to
Identify a certain rack from other racks. The rack where the CPU is located is always numbered 0.
Slot No.: Each template position (called “slot”) on the base plate has a unique number (except for those without number for inserting
Outside the left slot of the power supply). The slot on the right of the power supply is usually called slot 1. The slot number is marked on the plastic cover plate of the base plate.
Each template has a connector for template connection and upper and lower retainers for fixing the template.
Template position: each rack is assigned with a unique code, and each slot on each rack base plate is assigned with a unique code
Slot number, so the position of each template in the system can be determined by its rack number and slot number. For example, a template can
It is expressed as “the template plate is in the 4th slot of the 1st rack”. This labeling method enables the CPU to correctly read and write a specific
And can report the location of the fault template.
CPU base plate: one type of base plate is equipped with CPU (embedded CPU) on the circuit board of the base plate, and the other type of base plate has a slot for
On plug-in CPU templates (modular CPUs). A series 90-30 PLC system can only have one CPU base plate,
And this base plate is always called No. 0 rack. For modular CPU base plate, the CPU template can only be installed in slot 1. some
Special optional templates, such as FIP remote I/O scanner template (IC693BEM330), can also be used in the
Slot 1. The power supply, input/output (I/O), and most optional templates are not suitable for plugging into the CPU slot.
Expansion base plate: The expansion base plate does not contain the CPU, and can be installed 50 feet away from the CPU base plate through cables. One
The expansion board cannot run independently, and must be used in the CPU system with control function.
Remote base plate: The remote base plate does not contain the CPU and can be installed 700 feet away from the CPU base plate through cables. One
The expansion board cannot operate independently, and must be used in the CPU system with control function
Power slot: Each base plate must contain its own power module, which is installed in the power slot. The power slot is located on the base plate
There is no number at the leftmost end of the. CI858K01 has its own size and shape, so only the power module can be installed in this slot.
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