Use the following two tables in conjunction with the screen shot on the following page for a description of typical Scope information. M20007.2 3/02 Payload Meter II™ Troubleshooting M20-57 TABLE 1. DATA DEFINITIONS & COMMENTS DISPLAY DEFINITION COMMENT K K packet data sent P P packet data sent Final payload data M4 M4 packet data sent Swing load data M2 M2 packet data sent Real time data ACK Initialize real-time The PLM acknowledges the transmission of a command from Scope NAK Acknowledge data No acknowledgment of the transmission of a command from Scope Unknown Unassigned packet data Unexpected Data (error 1) Missed communication packet, Frame started with something other than STX.
Unexpected STX (error 2) PLM II™ transmitted a re-transmit request or re- initialized communications unexpectedly in mid- dle of frame BCC error (error 3) Block check sum error Program error (error 4) Scope cannot resolve communi- cation error Rep Code Final Load The final load calculated by the PLM II™. Final Pressure The pressure used to calculate the final pay- load. Swing Load Data All data used to calculate and transmit the dis- played swing load. RTM Data Real-time data transmitted to Scope via the RS232 connection. This data is transmitted by the PLM II™ every 200ms.