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2
Blocks of the Library
The appropriate FB SMS_sr_xxxx is used for data exchange between a SIMATIC
S7-CPU and a serial communication module or a serial communication processor
and the GSM modem.
2.1
Block list
The following table lists all blocks of the SMS_MD720-3_Library_V13. These
function blocks must be called in a cyclic OB.
The blocks realize the functions listed in
Table 2-1
Block
SMS_sr_1SI
SMS_sr_CM_PtP
SMS_sr_CP_340
SMS_sr_CP_341
SMS_sr_CP_441
string_to_DT
Sending and Receiving SMS Messages with MD720-3
Entry ID: 25545680,
V1.0,
CM/CP module
ET 200S 1SI
CM PtP
CP340
CP341
CP441-2
all
12/2013
Table
1-1.
Used send/receive system function
S_SEND, S_RCV
Send_P2P, Receive_P2P
P_SEND, P_RCV
P_SND_RK, P_RCV_RK
BSEND / BRCV
-
9
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