Ver 1.2
24
22/02/24
ES269
6000 Counts Intelligent Auto-Function DMM IC
Serial Data Output
The serial data sent to RSOUT pin periodically at every A/D conversion cycle by 3 times per second.
The data format complies with 8Bits transmission code with a baud rate of 9600. The host can use
RS232 interface to read the data. A single data packet includes a start bit (always 0), 8 data bits with no
parity check bit, and a stop bit (always 1). The high and low voltage levels correspond to AGND and V-
respectively. RSOUT remains at 1 (high) when it is inactive. Hence the start bit (0) could be used as the
triggering signal to begin the reading process. The following figure shows the data format of a single
packet.
Single packet
0
1
0V
MSB
LSB
-3V
D7 D6
D5
D4 D3
D2
D1
D0
One data block consists of 17 packets. The following figure shows the format of a data block. The
Header and Device code leads the whole packets. The range packet indicates the decimal point position
on LCD panel of meter. M_Digit1-3 consists of the readings on the main display of LCD panel. The
function packet indicates the measurement mode of the meter. Status1-4, Unit gives the other status of
the meter. S_Digit1-3 consists of the readings on the sub display of LCD panel.
All packets
