2
Remote Operation
This chapter describes operating the SIM928 over the serial interface.
In This Chapter
2.1
Index of Common Commands . . . . . . . . . . . . 2 – 2
2.2
Alphabetic List of Commands . . . . . . . . . . . . 2 – 4
2.3
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2 – 6
2.3.1
Power-on configuration . . . . . . . . . . . . 2 – 6
2.3.2
Bu
ff
ers . . . . . . . . . . . . . . . . . . . . . . 2 – 6
2.3.3
Device Clear . . . . . . . . . . . . . . . . . . . 2 – 6
2.4
Commands
. . . . . . . . . . . . . . . . . . . . . . . 2 – 7
2.4.1
Command syntax . . . . . . . . . . . . . . . . 2 – 7
2.4.2
Notation . . . . . . . . . . . . . . . . . . . . . 2 – 8
2.4.3
Examples . . . . . . . . . . . . . . . . . . . . 2 – 8
2.4.4
Output commands . . . . . . . . . . . . . . . 2 – 9
2.4.5
Battery commands . . . . . . . . . . . . . . . 2 – 9
2.4.6
Serial communication commands . . . . . . 2 – 10
2.4.7
Status commands . . . . . . . . . . . . . . . . 2 – 11
2.4.8
Interface commands . . . . . . . . . . . . . . 2 – 13
2.5
Status Model . . . . . . . . . . . . . . . . . . . . . . 2 – 17
2.5.1
Status Byte (SB) . . . . . . . . . . . . . . . . . 2 – 18
2.5.2
Service Request Enable (SRE) . . . . . . . . . 2 – 19
2.5.3
Standard Event Status (ESR) . . . . . . . . . 2 – 19
2.5.4
Standard Event Status Enable (ESE) . . . . . 2 – 20
2.5.5
Communication Error Status (CESR) . . . . . 2 – 20
2.5.6
Communication Error Status Enable (CESE)
2 – 21
2.5.7
Overload Status (OVCR) . . . . . . . . . . . . 2 – 21
2.5.8
Overload Status (OVSR) . . . . . . . . . . . . 2 – 21
2.5.9
Overload Status Enable (OVSE) . . . . . . . . 2 – 22
2 – 1
