21
D-shape Units (64-point Units)
I/O Unit locking notch
Nameplate
I/O indicators:
Indicate ON/OFF status of I/O points
40-pin connectors
I/O number setting switch
Indicator switch:
Determines whether the status of
connector 1 or connector 2 I/O points
are indicated by the I/O indicators.
2-5-3 High-density I/O Units Classified as Special I/O Units
Some High-density I/O Units are classified as Special I/O Units. Up to 10 Special
I/O Units can be connected to a PC. The Units have two 24-pin connectors. In
general, these Units control 32 I/O points, although some Units can control 128
I/O points when set for dynamic operation.
Refer to Appendix B Specifications for detailed specifications and dimensions of
the Units.
Unit Specifications Model Number Remarks
TTL Input Unit 5 VDC, 32 inputs C200H-ID501 8 pts can be set as high-speed inputs.
DC Input Unit 24 VDC; 32 inputs C200H-ID215
TTL Output Unit 5 VDC, 32 outputs C200H-OD501 Can be set for 128 dynamic outputs.
Transistor Output Unit 24 VDC; 32 outputs C200H-OD215
TTL I/O Unit 5 VDC, 16 inputs, 16 outputs C200H-MD501
8 pts can be set as high-speed inputs.
DC Input/Transistor
12 VDC; 16 inputs, 16 outputs C200H-MD115
Can be set for 128 dynamic inputs.
Output Unit
24 VDC; 16 inputs, 16 outputs C200H-MD215
Can be set for 128 dynamic inputs.
Note Refer to Optional Products, Appendix A for a list of external connectors.
Setting the Unit Number High-density I/O Units are each allocated 10 I/O words in the IR Area (IR 100 to
IR 199) by setting the unit number switch on the front of each Unit. The 10 words
begin with n, where n = IR 100 + 10 × unit number. For example, a Special I/O
Unit with a unit number of 3 would be allocated IR 130 to IR 139.
Always turn the PC power off before changing a Unit’s unit number. The new unit
number (0 to 9) will not be recognized unless the PC has been turned off.
I/O Units Section 2-5
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