Siemens SIMATIC S7-1200 Reference Manual page 77

Basic instructions
Point-to-point connection: CP 340
✔ ✔
Receive data
✔ ✔
Send data
✔ ✔
Output alarm text with up to 4 tags to printer
✔ ✔
Delete receive buffer
✔ ✔
Read accompanying signals at the RS 232 interface
✔ ✔
Write accompanying signals at the RS 232 interface
Point-to-point connection: CP 341
✔ ✔
Receive or provide data
✔ ✔
Send or fetch data
✔ ✔
Output alarm text with up to 4 tags to printer
✔ ✔
Read accompanying signals at the RS 232 interface
✔ ✔
Write accompanying signals at the RS 232 interface
Point-to-point connection: CP 440
✔ ✔
Receive data
✔ ✔
Send data
✔ ✔
Delete receive buffer
A5E33284667-AA
Extended instructions
Description
Technology
LAD/FBD
P_RCV
P_SEND
P_PRINT
P_REST
V24_STAT_340
V24_SET_340
P_RCV_RK
P_SND_RK
P_PRT341
V24_STAT
V24_SET
RECV_440
SEND_440
RES_RECV
Communication
STL
SCL
(not S7-1200)
Page 76