990XCP98000 SQUARE D, 990XCP98000 Datasheet - Page 17
![no-image](/images/manufacturer_photos/0/6/626/square_d_sml.jpg)
990XCP98000
Manufacturer Part Number
990XCP98000
Description
QUANTUM CPU BATTERY FOR S
Manufacturer
SQUARE D
Datasheet
1.990XCP98000.pdf
(463 pages)
Specifications of 990XCP98000
Rohs Compliant
YES
Battery Capacity
1800mAh
Battery Technology
Lithium
Battery Voltage
3V
Battery Terminals
Connector
Weight
0.12lb
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- Download datasheet (22Mb)
Presentation
(continued)
Modicon
automation platform
Safety PLCs
An HMI terminal is permitted to read data from the Quantum Safety PLC, but may
only write data to the “unrestricted” memory area
b
b
b
As this type of communication is not defined with Unity Pro
Safety PLC that is responsible for defending itself against write access attempts by
the HMI terminal: any attempt to send a write command to the safety memory
be ignored.
Even in maintenance mode, write protection prevents data being written to the safety
memory by other PLCs or HMI terminals.
It is only possible to change to maintenance mode using Unity Pro XLS and after
presenting a password. The data in this area can only be modified or adjusted with
Unity Pro XLS in maintenance mode.
b
b
b
b
Communication between Unity Pro XLS and the Quantum Safety PLC takes place via:
b
b
b
b
Even if communication between Unity Pro XLS and the Quantum Safety PLC is not
integrated into the safety loop, it is still subject to checks (e.g., a CRC) to help ensure
that the data is transferred correctly and that no communication errors occur.
(1) For details about the safety memory and unrestricted memory, see page 1/24.
Communication with HMI terminals
Writing in maintenance mode
PC-to-PLC communication
Modbus TCP: either via the CPU port, or via module
Modbus Plus
Modbus RS232/RS485
Modification of program logic
Assignment of values
Forcing of values
Debugging
Modbus TCP. CPU port or NOE module
Modbus Plus
Modbus RS232/RS485
USB
®
Quantum
™
(1)
via:
140 NOE 771 11
™
XLS, it is the Quantum
(1)
1/9
will
10
10
1
1
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2
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3
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