Powerful, tiny and easy-to-use these are the attributes of profichip’s
SODIMM-PLC module. Equipped with a rich set of direct IO and
communication features, programmable in Step7 from Siemens and
up to 512kB of PLC user memory this module is the ideal extension
to various types of applications where fast, deterministic and reliable
hardware PLC control in a small form factor is required. Board
Controllers, HMIs and a broad range of machinery can benefit from new
control capabilities and direct IO- and communication functions. Supporting
a very popular programming language, a well-known tool chain
and extensive maintenance features will further increase the market acceptance
and success of the final product.
I/O Functions
The SODIMM-PLC module is build around profichip’s PLC 7001 chip.
Based on the core of the PLC 7000 which has been in use for almost
four years in over 10.000 applications worldwide, the PLC 7001 offers
extended IO features with up to 32 digital inputs and 24 digital outputs
directly on-chip. The IO interface is configurable to provide high level
user functions like numerous hardware counter modes.
16 digital inputs can be employed with on-chip alarm functionality which
results in low latency and fast response times upon critical system conditions
and provides the capability to capture time critical events very
accurately. The build-in Real-Time-Clock which can be buffered by an
external battery allows precise timestamping and clock synchronized
control tasks. SSI interface for rotary encoders, 4-channel Pulse-Width-
Modulation and Stepper-Motor-Control are to be supported in future
firmware updates.
If more than 56 digital I/O bits or analog functions are needed a
serial I/O bus is provided which can be operated with up to 32
peripheral modules compatible with System 200V from VIPA.
User Data Interface
For maximum flexibility and convenient adaption the SODIMM-PLC module
is equipped with a 16 bit SRAM interface to an external FPGA or
Dual-Port-RAM with up to 1024 bytes address space mapped into the
PLC I/O area. This interface can be used to easily share data of external
communication interfaces like PROFIBUS- or CAN-Master with the
integrated PLC memory as well.
Communication Interfaces
Currently there are three serial interfaces and one Ethernet port
available on the SODIMM-PLC module. The serial interfaces are
dedicated to MPI communication, PROFIBUS-DP Slave interface
(both supporting transmission rates up to 12 MBit/s) and a serial
standard interface (e.g. for establishing a Point-To-Point (PtP)
communication). The Ethernet port is restricted to PU/OP functionality
like hardware configuration, PLC program download and online
functions. Alternatively the MPI interface can be used for system
setup, program update, debugging and online functions.
SODIMM-PLC 7001 SO-313SC-2DP max. confi g.
PLC Core CPU PLC 7001
PLC Assembler Code MC7
PLC Memory (Data/Code) 32kB / 32kB 256kB / 256kB
PLC Memory Extension up to 256kB / 256kB -
System Frequency 48MHz
Internal Cycle Time 20 nsec.
System Interface
User Data / Extension Port DPR Interface (16Bit / 1024Bytes)
On-Board I/Os 16DI / 16DO 32DI / 24DO
Alarms (e.g. OB 40) 16
Counter (Up, Down, A/B, etc.) 3 x 32Bit 4 x 32Bit
SSI In/Out-Master -/- 1/1
Backplane-Bus, ser. I/O-Bus ..
Communication Interfaces
Ethernet 10/100 (PU/OP) 1x
MPI 1 x 187,5kBit/s 1 x 12MBit/s
PROFIBUS-Slave, 12 MBit/s 1x
Standard Serial 1x
SD / MMC 1x
PLC System Counter and Timer
Counter 512
Timer 10 msec. 512
High Resolution Timer 1ìsec. max *
IEC Timer max *
RTC (+ext. Battery for Backup) ..
Operation Conditions
Core Supply Voltage 5,0 V
I/O Voltage 3,3 V
Power Consumption 2,0 W
Temperature Range - 25°C - + 60°C
* limited by available memory only
SODIMM-PLC 7001
-PLC 7001
Embedded PLC module for STEP7from Siemens