PSC Magellan 8500 Service Manual download pdf (Page 55)

METTLER TOLEDO

DIVA Service Manual 49

6.1.6 EPOS 2

6.1.6.1 Data Format

2400 Baud (select 2400, 4800 or 9600)

7 data bits (select 7 or 8)

Even parity (select Even, None or Odd parity)

1 stop bit (select 1 or 2 stop bit)

6.1.6.2 Handshaking

For PC DB25 serial port connector: Jumper 4 to 5, and 6, 8, & 20 together.

For PC DB9 serial port connector: Jumper 4 to 6 and 7 to 8.

6.1.6.3 Command Descriptions

Command COMMENTS

ENQ (05h) Starts the communication sequence

ACK (06h) Data Available

NAK (15h) No acknowledgement

NUL (00h) No data available

DC1 (11h) Data Request

STX (02h) Start of text

Information byte, broken down into the following bits:

Bit Capacity

210

0 0 1 15kg x 0.005kg

0 1 0 30lb x 0.01lb

0 1 1 6kg x 0.002kg

Bit 3 - Logic 1

Bit 4 - Logic 1 means under/over range

Bit 5 - Logic 1

Bit 6 - Logic 1 indicates non-AVR capacities

Weight 5 bytes with MSD first

BCC

Block Check Character calculated as the even column parity

(Longitudinal Redundancy Check) of all characters except the STX

and ETX.

ETX (03h) End of text

STX Z NUL NUL NUL NUL NUL ETX BCC

Command String to Zero the scale from the EPOS, note that the BCC in this case will be

“Z”

STX N NUL NUL NUL NUL NUL ETX BCC

Command String to Tare the scale from the EPOS, note that the BCC in this case will be

“N”

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PSC Magellan 8500 Service Manual Page 55