135
Sinking Current (NPN) / Sourcing Current (PNP)
10.2
Sinking Current (
NPN) /
Sourcing Current (
PNP)
You can use NPN/PNP switching to change the type of corresponding programmable controller.
NPN is sinking current and PNP is sourcing current.
It is set to NPN at the time of shipment from the factory.
CAUTION
To avoid damaging the instruments, observe the following.
• Make sure the instrument power supply is OFF when operating the NPN/PNP
switches.
• Align the NPN/PNP switch settings to the settings of the externally-connected devices.
Use the NPN/PNP switch on the rear of the instrument.
Rear
Sinking current
NPN
Sourcing current
PNP
Reference: “Internal circuit configuration” (p. 139)
EXT.I/O mode switch settings
NPN
PNP
Input circuit
Compatible with sinking outputs
programmable controllers
Compatible with sourcing outputs
programmable controllers
Output circuit
Non-polar
Non-polar
ISO_5V power supply outputs
+5 V output
−5 V output
10
External Control (EXT
. I/O)
Summary of Contents for ST4030
Page 2: ......
Page 14: ...6 Usage Notes ...
Page 32: ...24 Inspecting before Measurement and Verifying Operations ...
Page 42: ...34 Table Copying ...
Page 108: ...100 Setting Dielectric Break down Judgment Conditions ...
Page 132: ...124 Terminal Open Error Setting ...
Page 198: ...190 Editing Files and Folders ...
Page 214: ...206 Interface Specifications ...
Page 248: ...240 Precautions when Processing Test Leads ...
Page 252: ...244 Index ...
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