Chentronics iScan 3 - Daisy Chain Configuration

RELATED DOCUMENT – MUST COMPLY WITH SCHEDULE DOCUMENT(S):
CERT-iS3 MNL, CDM-10000105, 106, 107, 108, 109, 110,
113, 119, 167, 188, 191, 192
FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
iScan®3 MANUAL
PAGE 17 OF 22
ISO 9001 CERTIFIED
DRAWN BY:
AR
ON:2021-MAY-14
LAST REV BY:
AR
ON:2022-AUG-01
DCO No.
14724
DWG. No. MNL-ISCAN3
REV. F
THIS DRAWING OWNED BY CHENTRONICS. IT IS
CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
REQUEST. THE BORROWER BY RECEIVING IT HAS AGREED
NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
TO FURNISH INFORMATION FROM IT TO OTHERS NOR TO
MAKE ANY USE OF IT THAT IS OR MAY BE INJURIOUS TO
CHENTRONICS. FOR MORE INFORMATION, PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥ 2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
MNL-ISCAN3
4.6 “Daisy Chain” Configuration
COMMUNICATION WIRING SUMMARY:
• Wiring must be twisted pair shielded cable. Ground the shield only at the control panel to prevent ground loops.
• Use only “Daisy Chain” or “Y” configurations. Connect all of the “Com A” wires together. Connect all of the “Com B” wires together. Make
sure that the “Com A” and “Com B” wires are connected to the correct terminals on the converter.
• An RS-485 repeater is required for every 30 scanners or 4000 ft (1200 m) of length for a maximum of 127 scanners in a network.
• Ensure the DC (-) of all scanners are tied together as a reference for RS-485 communications. The GND terminal of the USB to RS-485
converter and the repeaters must also be connected to the DC (-) of the scanners.