Instruction Manual
13.8 Bringing Out The BCD Overflow Line ....................................................................................... 60 
13.9 3 Digit At A Time Multiplex.........................................................................................................60 
13.10 6 Digit At A Time Card Address...............................................................................................60 
13.11 Select Data Polarity: Jumper S8..............................................................................................61 
13.12 Decimal Point Address Code...................................................................................................61 
13.13 Applying Non-Isolated/Isolated Power....................................................................................61 
13.14 Driving A Printer .......................................................................................................................61 
14. RELAY OPTIONS ................................................................................................................61 
14.1 Features Overview ......................................................................................................................61 
14.2 Wiring/Connections ....................................................................................................................63 
15.0 RS-232 OR RS-485 OPTION BOARD ...............................................................................64 
15.1 Features Overview ......................................................................................................................64 
15.2 Front-Panel Pushbutton Configuration..................................................................................... 65 
16.0 EXTERNAL CONTROL LINES ..........................................................................................65 
16.1 Tare (PIN 1) ..................................................................................................................................66 
16.2 Peak (PIN 2) .................................................................................................................................66 
16.3 Valley (PIN 3) ...............................................................................................................................66 
16.4 SWLIN2 (PIN 4) ............................................................................................................................66 
16.5 Peak & Valley Or External Reset (PIN 5) ...................................................................................66 
16.6 Push To CAL (PIN 6) ...................................................................................................................66 
16.7 Digital Ground (PIN 7).................................................................................................................66 
16.8 +5 V (PIN 8) ..................................................................................................................................66 
16.9 Display Hold (PIN 9)....................................................................................................................66 
16.10 Lockout EEPROM (And ‘MENU’ Button) (PIN 10)...................................................................66 
16.11 Print Command And/Or Reset Of Alarms (PIN 11).................................................................67 
16.12 Nonstandard RX (PIN 12) And Nonstandard TX (PIN 13) ......................................................67 
16.13 Push to CAL (PIN 14) ................................................................................................................67 
16.14 +V EXT (PIN 15) .........................................................................................................................67 
16.15 SP1 (PIN 16)...............................................................................................................................67 
16.16 SP2 (PIN 17)...............................................................................................................................67 
16.17 AL1 (PIN 18)...............................................................................................................................67 
16.18 AL2 (PIN 19)...............................................................................................................................67 
16.19 RTN EXT (PIN 20) ......................................................................................................................67 
17.0 TROUBLESHOOTING - DISPLAY MESSAGES AND TROUBLESHOOTING GUIDE .....67 
17.1 Error Mode Messages.................................................................................................................68 
17.1.1 Flashing 999999 (Numerical Overflow) ..............................................................................68 
17.1.2 Flashing ERR O1 (Offset Overflow) ....................................................................................68 
17.1.3 Flashing ERR O2 (Setpoint Overflow) ................................................................................68 
17.1.4 NOSTOR & STORED (Programming Entries In EEPROM)................................................ 68 
17.1.5 Flashing +OVLD (Positive Input Overload)........................................................................ 68 
17.1.6 Flashing +OPEN (Open Sensor Indication) .......................................................................68 
17.1.7 Flashing -OPEN (Open Sensor Indication) ........................................................................68 
17.1.8 Flashing I OVSC (Input Overscale) .....................................................................................68 
17.1.9 Flashing R OVSC (Reading Overscale) ..............................................................................68 
17.1.10 Flashing CB OVF (Count By Overflow) ............................................................................ 68 
17.1.11 Flashing UOM.OVF (Unit Of Measure Overflow) .............................................................68 
17.2 Troubleshooting Guide...............................................................................................................69 
18.0 SPECIFICATIONS..............................................................................................................70 
18.1 Current Input ...............................................................................................................................70 
18.2 Voltage Input ...............................................................................................................................70 
CF 67  iv  M1291/N/0403 11279ML-02 Rev. A 










