Siemens AC75 MaxMsgSizenum, ConnStatusnum, CmdApdustr, CmdApduLennum, RspApdustr, RspApduLennum

AC75 AT Command Set

15.2 AT^SRSM

s

<MaxMsgSize>(num)

SAP parameter MaxMsgSize

Handling of this parameter is as follows:

•	If the AC75 is acting as SAP client the requested value of <MaxMsgSize> is 300. During SAP connection
	setup this value may be negotiated with the server to the minimal value 274, which is calculated by 256 data
	bytes as part of a TRANSFER_APDU_RESP message plus a 16 byte SAP header and two status bytes. If
	the server does not accept this value range no SAP connection will be established.
•	If the AC75 is acting as SAP server it requires that a <MaxMsgSize> value of 276 will be accepted by a
	connected client.

<ConnStatus>(num)

SAP parameter Connection Status

<DiscType>(num)

SAP parameter Disconnection Type

<CmdApdu>(str)

SAP parameter Command APDU or Command APDU7816

<CmdApduLen>(num)

SAP parameter Command APDU length

<RspApdu>(str)

SAP parameter Response APDU

<RspApduLen>(num)

SAP parameter Response APDU length

<ATR>(str)

SAP parameter ATR

<AtrLen>(num)

SAP parameter ATR length

<ResCode>(num)

SAP parameter Result Code

<CardRdStatus>(num)

SAP parameter Card Reader Status

<StatusChange>(num)

SAP parameter Status Change

<TransportProtocol>(num)

SAP parameter Transport Protocol

AC75_ATC_V01.002	Page 423 of 569	10/30/06
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