I564
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I
02
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7
ADDITIONAL RESOURCES
– The expansion modules provide additional resources that can be used through the dedicated setup menus.
– The setup menus related to the expansions are always accessible, even if the expansion modules are not physically fitted.
– Since it is possible to add more than one module of the same type (for instance two communication interfaces), the setup menus are multiple, identified by a sequential number.
– The following table indicates how many modules of each group can be mounted at the same time. The total number of modules must be less than or equal to 4.
MODULE TYPE CODE FUNCTION MAX N° SLOT POS.
ADDITIONAL STEPS EXP1001 4 STATIC OUTPUTS (FAST STEP) 4 Any
EXP1006 2 RELAY OUTPUTS (STEP) 4 Any
EXP1007 3 RELAY OUTPUTS (STEP) 2 1 or 2
COMMUNICATION EXP1010 USB 2 Any
EXP1011 RS232 2 Any
EXP1012 RS485 2 Any
EXP1013 Ethernet 1 Any
EXP1014 Profibus® DP 1 Any
EXP1015 GSM-GPRS (without antenna
) 1 2
INPUTS/OUTPUTS EXP1000 4 DIGITAL IN 2 1 or 2
EXP1002 2 DIGITAL IN + 2 STATIC OUT 4 1 or 2
EXP1003 2 RELAY OUTPUTS 4 Any
EXP1004 2 ANALOGUE IN 2 1 or 2
EXP1005 2 ANALOGUE OUT 2 1 or 2
EXP1008 2 DIGITAL IN + 2 RELAY OUTPUTS 2 1 or 2
OTHER FUNCTIONS EXP1030 DATA RTC (w/reserve energy) 1 1
Antenna code CX03 is available and can be purchased separately.
COMMUNICATION CHANNELS
– The DCRG8F supports a maximum of 2 communication modules, indicated as COMn. The communication setup menu is thus divided into two sections
(n=1 … 2) of parameters for the setting of the ports.
– The communication channels are completely independent, both for hardware (physical interface) and communication protocol.
– The two channels can communicate at the same time.
– By activating the Gateway function, it is possible to have a DCRG8F equipped with an Ethernet port and a RS485 port which works as a “bridge” towards the other devices provided with the RS485 port only, and
so obtain a saving (one Ethernet access point only).
– In this network, the DCRG8F with Ethernet port will have parameter P16.n.09 Channel function set to Gateway for both communication channels (COM1, COM2) while the other devices maintain standard
configuration with default value = Slave.
INPUTS, OUTPUTS, INTERNAL VARIABLES, COUNTERS, ANALOG INPUTS
– The inputs and outputs are identified by a code and a sequence number. For instance, the digital inputs are identified by code INPx, where x is the number of the input. In the same way, digital outputs are identified
by code OUTx.
– The sequence number of I/Os is simply based on their mounting position, with a progressive numbering from left to right.
– It is possible to manage up to 8 analog inputs (AINx), connected to external analog sensors (temperature, pressure, flow, etc.). The value read by the sensors can be scaled to any unit of measure, viewed on the
display and transmitted on the communication bus. The values read by analog inputs are shown on the dedicated display page. They can be used to drive limit thresholds LIMx that can be linked to an internal or
external output.
– The expansion I/O numbering starts from the last I/O installed on the base unit. For example, with OUT1…OUT8 digital outputs on the base unit, the first digital output on the expansion modules will be OUT9.
See the following table for the I/O numbering:
– In a similar way, there are some internal bit-variables (markers) that can be associated to the outputs or combined between them. For instance, it is possible to apply some limit thresholds to the measurements
taken by the system (voltage, current, power, etc.). In this case, the internal variable, named LIMx, will be activated when the measurements go out of the limits defined by the user through the dedicated setting
menu.
– Furthermore, there are up to 8 counters (CNT1..CNT8) that can count pulses coming from an external source (through a digital input INPx) or the number of times a certain condition has taken place. For instance,
defining a limit threshold LIMx as the count source, it will be possible to count how many times one measurement exceeds a certain limit.
– The following table shows all the internal variables managed by DCRG8F, with their range highlighted (number of variables per type).
CODE DESCRIPTION BASE EXP...
INPx Digital Inputs - 1…8
OUTx Digital Outputs 1…8 9…16
COMx Communication ports - 1…2
AINx Analog Inputs - 1…4
AOUx Analog Outputs - 1…4
CODE DESCRIPTION RANGE
LIMx Limit thresholds 1…16
REMx Remote-controlled variables 1…16
UAx User alarms 1…8
PULx Energy consumption pulses 1…3
CNTx Programmable counters 1…8
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