Service manual

METTLER TOLEDO
DIVA Service Manual 61
6.1.11 ICL
6.1.11.1 Data Format
9600 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)
6.1.11.2 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.
6.1.11.3 Command Descriptions
Command COMMENTS
ENQ (05h) Starts the communication sequence
ACK (06h) Data Available
CAN (18h) Repeat weighing
NAK (15h) No acknowledgement
NUL (00h) No data available
DC1 (11h) Data Request
STX (02h) Start of text
ID
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. If the scale registers underweight or
overweight a data string with data of zero (00) will be transmitted with
bit 4 (X) of the ID byte set to 1. In cases where MSD or LSD are not
required a `NUL' character will be transmitted in the unused position.
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
CR (0dh) Data received and compared correctly