1 individual address read, 2 consecutive read, 3 block reads – Maxim Integrated 78M6631 User Manual
Page 30: 4 concatenated reads, Individual address read, Consecutive read, Block reads, Concatenated reads
78M6631 Firmware Description Document
UG_6631_078
30
Rev 2
7.3.1 Individual Address Read
The host can request the information in hex or decimal format. In an address read command, the
character $ requests the information to be returned in hex format. While the character ?, requests
information to be returned in decimal. When requesting information in decimal, the data is preceded by a
+ or a -. The exception is )AB? which returns a string (see the
AB
description).
An example of a command requesting the measured output located at address 0x28 in decimal is as
follows:
>)28?
An example of a command requesting the measured output located at address 0x28 in hex is as follows:
>)28$
7.3.2 Consecutive Read
The host can request information from consecutive addresses by adding additional ? for decimal or
additional $ for hex.
An example of requests for the contents in decimal of ten consecutive addresses starting with 0x32 is:
>)32??????????
An example of requests for the contents in hex of ten consecutive addresses starting with 0x12 would be:
>)32$$$$$$$$$$
Note: The number of characters per line is limited to no more than 60.
7.3.3 Block Reads
The block read command can also be used to read consecutive registers.
For decimal format:
)startaddress:endaddress?
For hexadecimal format:
)startaddress:endaddress$
The following block read command requests a block of measurement information in decimal format:
>)20:3D?
7.3.4 Concatenated Reads
Multiple commands can also be added on a single line. Requesting information in decimal from two
locations and the block command from above are given below:
>)32?)35?)20:2E?
Note: The number of characters per line is limited to no more than 60.