RCH
INSTALLATION AND MAINTENANCE MANUAL model TOUCH ME
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9.4 E.J. WRITING / READING CIRCUIT (ELECTRONIC JOURNAL)
The (X1) microprocessor directly controls the removable MMC used as the electronic
support for the journal. Serial type communication with MMC protocol is carried out
through the 4 signals TXD-1, RXD-1, CKS-1 and EN-EJ:
TXD-1 Date
Transmission
RXD-1 Date
Reception
CKS-1 Synchronization
signal
EN-EJ Writing/Reading
enabling
The J5 jumper should be closed during the device’s normal operation with the MMC, while
it must be open for the direct programming of the FLASH memory (firmware uploading) of
the microprocessor (X1). Direct programming is typically done for the first time by the
builder, of afterwards after the replacement of the microprocessor itself.
9.5 DRAWER OPENING CIRCUIT
The timed
signal for opening the drawer, coming from the
(X1) microprocessor’s DRAWER
port, pilots the driver MOS2: the transistor’s saturation activates the drawer’s slider
electromagnet.
The auto-recovering safety component F2 (Polyswitch RXE050RY) interrupts current
in
case of circuit overloading .