LDM 210 - LDM 220 Description - Functionality
2.3.1.1 Retries
By default, the reader resends messages 10 times if the dosimeter fails to respond.
It is possible to disable the retries by relocating jumper SS4.
2.3.1.2 Reduced range
By default, the reader has a normal range of approximately 20 cm.
It is possible to reduce the range by relocating jumpers SS5 and SS8.
2.3.2 Test Mode.
It is a mode designed to verify proper functioning of the reader.
Refer to Corrective Maintenance in page 29.
2.3.3 The Digital Input/Output TOR
4 inputs and 4 outputs are managed by the reader by PC command.
These input/outputs are accessible on the HE10 male 2x7 pin 2.54 mm (0.1”0 spacing
connector).
They are protected against electrostatic discharge by protection diodes.
Inactive status (no exterior cable) of the inputs is a high level 3.3 V (pull up).
Active status is low-level 0 V.
Inactive status (by default) of the outputs is low 0 V.
Active output status is high-level 3.3 V.
These input/outputs can be used for example in an access control case:
Access LED authorized or refused.
Locking of access.
System busy or available.
Authorization request of passage, etc.
10 128569B
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