SIMATIC S7-1200
Communication
CP 1242-7
4/107
Siemens ST 70 · 2011
4
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Overview
The CP 1242-7 communication processor is used to connect a
SIMATIC S7-1200 to the globally widespread GSM/GPRS mobile
radio network and has the following characteristics:
• Worldwide wireless exchange of data between S7-1200
controllers and/or between S7-1200 controllers and control
centers with an Internet connection
• Communication based on the GPRS (General Packet Radio
Service) mobile wireless service with data transmission
speeds of up to 86 Kbit/s in the downlink and 43 Kbit/s in the
uplink
• GPRS mode with fixed IP addresses and dynamic
IP addresses with standard mobile phone contract
• Time synchronization on the basis of NTP (Network Time
Protocol)
• On-demand connection buildup via voice call or text message
• Sending and receiving of text messages
• Clearly laid out LED signaling for fast and easy diagnostics
• Compact industrial enclosure in S7-1200 design for mounting
on a standard mounting rail
• Fast commissioning thanks to easy configuration using
STEP 7
In conjunction with the "Telecontrol Server Basic" software, the
CP 1242-7 forms a telecontrol system with further properties:
• Connection of up to 5000 telecontrol stations to the control
center via an OPC interface
• Data buffering in the substations in the event of connection
failures
• Central status monitoring of the substations
• No special provider services required for fixed IP addresses
• Teleservice access with STEP 7 to the substations via Internet
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Technical specifications
Order No. 6GK7 242-7KX30-0XE0
Product type designation
Transmission rate
Transmission rate for GPRS trans-
mission on uplink
• Minimum -
•Maximum 43 Kbit/s
Transmission rate for GPRS trans-
mission on downlink
• Minimum -
•Maximum
86 Kbit/s
Wireless technology
Type of mobile wireless service
supported
•SMS Yes
•GPRS Yes
Type of mobile wireless network
supported
•GSM Yes
•UMTS -
Type of mobile wireless service -
note
GPRS (Multislot Class 10)
Operating frequency
•850 MHz Yes
•900 MHz Yes
• 1800 MHz Yes
• 1900 MHz Yes
Transmit power
• At operating frequency 850 MHz 2 W
• At operating frequency 900 MHz 2 W
• At operating frequency 1800 MHz
1 W
• At operating frequency 1900 MHz 1 W
Interfaces
Number of electrical connections
• for external antenna(s) 1
• for power supply 1
Number of slots for SIM cards 1
Design of electrical connection
• for external antenna(s) SMA socket (50 Ohm)
• for power supply 3-pin terminal strip
Design of SIM card slot Slot under front flap
Supply voltage, current
consumption, power loss
Type of power supply DC
External power supply
24 V
Relative positive tolerance at
24 V DC
20%
Relative negative tolerance at
24 V DC
20 %
Current input from external power
supply at 24 V DC
• Typical 0.1 A
•Maximum
0.22 A
Effective power loss 2.5 W
© Siemens AG 2011
© Siemens AG 2011
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