Intermec PX4i Double Serial Interface Kit Installation Instructions - Page 36
mA Current Loop
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Chapter 4 - Serial Interface "uart3:", "uart4:", and "uart5:" 20 mA Current Loop (reconfiguration required) Remove strap from J6 A Fit strap on J10 if printer is receiver: A+C = active B = passive Fit strap on J9 if printer is transmitter: A+C = active B = passive C60 IC8 NC A K R34 Z2 IC22 R31 F14 F10 F15 F11 F16 F12 UARTB IC23 BA J6 F13 J10 R35 R30 J7 C B A C11 R27 C63 C13 IC21 C61 R24 R23 1-971642-01 C10 C12 P01 R33 IC7 J5 C40 C NC A K Z1 B R25 J8 A R26 F9 J9 R19 C64 R32 P3 IC24 RS232: IC21, J6A RS422: IC22, J6B, J7, J8 20MACL: IC23, IC24, J5 J9*, J10* *: TRANSM.=J9, RECEIV.=J10 PASSIVE=B, ACTIVE=A+C C62 R28 R29 NC A K D1 R20 R21 C36 IC20 R22 C41 RS232: IC11, J2A RS422: IC12, J3, J4 RS485: IC13, J1, J4* *: IF END OF CABLE C4 IC3 C3 C33 IC2 C34 C42 P1 C35 IC10 C51 Fit optocouplers on IC23 and IC24 Remove RS-232 circuit from IC21 Fit strap on J5 F1 F6 F2 F7 F3 F8 F4 F5 UARTA BA J2 R15 J3 C2 R14 R13 R12 R16 J4 IC11 C1 IC13 IC12 R8 R18 R10 C56 R9 C57 R17 IC9 C55 P2 C54 R11 R4 C30 R7 IC5 IC6 C53 R3 R2 C52 R6 C50 J1 R5 C32 R1 IC1 C31 IC4 The optocouplers are available as spare parts, see the Spare Parts Catalog. 32 Double Serial Interface Kit Installation Instructions