Service manual

Section - IV Software BT3000 PLUS Rev.0, Soft Ver. 8 Page 4 of 15

4-4. CALCULATION OF CHECK-SUM:

This procedure calculates a Control code in accordance with the transmitted or received

data.

An algebraic sum of ASCII values of all the sent characters is executed. For example the

character "A" has ASCII value 65 - 0x41.

Consequently the module 256 of the found value is executed (balance of dividing the

value by 256). This is the Check-Sum to be sent.

4-4.1. ADDITIONAL NOTES ON THE SERIAL PROTOCOL

The patients reception has been improved in the following manner:

1) If a patient is already in the list and is sent again, then the same will be

overwritten.

2) If more patients above the real capacity of the list were sent then these were

sent to the supplementary list of controls. This error has been corrected.

3) The following errors have been added to the existing list:

Code Description

A patient has been sent after assigning him a specific position, which is already

occupied.

The patient is already in the list (or has been executed), the Clone field has not been

enabled, but the list of assignment is different in comparison to that of the patient

stored in the analyzer.

The transmitted code belongs to an executed patient but neither the Repetition field

nor the Clone field has been activated.

4-5. WIRING DIAGRAM OF INTERFACE CABLE

BT3000 PLUS