GM862-GPS Software User Guide - SemiconductorStore.com

GM862-GPS Software User Guide1vv0300729 Rev. 4 - 24/01/072.2 Command Response TimeoutEvery command issued to the Telit GM862-GPS returns a result response if response codes areenabled (default) (see command ATQn). The time needed to process the given command and returnthe response varies from command to command and may depend also from the network on which thecommand may interact. As a result every command is provided with a proper timeout time, if this timeelapses without any result from the operation, then the ERROR response is reported as if theoperation was not successful.The timeout time is quite short for commands that imply only internal set up commands, but may bevery long for command that interact with the network (or even Networks).NOTE: In case no response is received after the timeout time has been elapsed, then tryrepeating the last command and if still no response is received until the timeout time, then anUnconditional Shutdown MUST be issued and then the device shall be powered ON again.In the table below are listed all the commands whose timeout differs from the default 100 ms and theireffective timeout is reported:Command Time-Out (Seconds)+CBST 0.2+CR 0.2+CRC 0.2+CRLP 0.2+CSCS 0.2+CEER 5+CGMI 5+CGMM 5+CGMR 5+CGSN 20+CIMI 20+CNUM 20+CREG 5+COPS 180+CLCK 180@CLCK 180+CPWD 180+CLIP 180+CLIR 180+CCFC 180+CCWA 20+CHLD 20+CUSD 180+CAOC 20+CSSN 20Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 6 of 111