ES-7803-AJ Rev.1
R7M-PA8
Remote I/O R7 Series
MODBUS I/O MODULE
(totalized pulse input, 8 points, 115.2 kbps)
Functions & Features
• 8 points totalized pulse input module for Modbus
• Extension module can be connected
MODEL:R7M-PA8-[1][2]
ORDERING INFORMATION
• Code number: R7M-PA8-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. R7M-PA8-AR/Q)
• Specify the specification for option code /Q
(e.g. /C01/SET)
I/O TYPE
PA8
: Totalized pulse input, 8 points
[1] POWER INPUT
DC Power
R
: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
Universal
AR
: 24 V AC/24 V DC (universal)
(Operational voltage range 24 V AC±10 %, 50 - 60 Hz /
24 V DC±10 %, ripple 10 %p-p max.)
[2] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
EX-FACTORY SETTING
/SET
: Preset according to the Ordering Information Sheet
(No. ESU-7803-AJ)
RELATED PRODUCTS
• PC Configurator cable (model: MCN-CON or COP-US)
• PC configurator software (model: R7CON)
Downloadable at our web site.
• Discrete input extension module (model: R7M-EAx)
• Discrete output extension module (model: R7M-ECx)
GENERAL SPECIFICATIONS
Connection:
M3 separable screw terminal (torque 0.5 N·m)
Solderless terminal
: Refer to the drawing at the end of the section.
Recommended manufacturer
: Japan Solderless Terminal MFG. Co., Ltd., Nichifu Co., Ltd.
Applicable wire size
: 0.25 to 1.65 mm
2
(AWG 22 to 16)
Screw terminal
: Nickel-plated steel
Housing material
: Flame-resistant resin (gray)
Isolation
: Input to Modbus or FG to power
Extension:
No extension (*), Discrete input 8 or 16 points, Discrete output 8 or 16 points
Selectable with the front DIP SW
(*) Factory default setting
Status indicator LEDs
: PWR, RUN, ERR, SD, RD
(Refer to the instruction manual)
Totalized pulse input status indicator
LED
: LED turns ON with contact ON
Configurator connection
: 2.5 dia. miniature jack
■Recommended solderless terminal
MODBUS COMMUNICATION
Standard
: Conforms to TIA/EIA-485-A
Transmission distance
: 500 meters max.
Transmission media
: Shielded twisted-pair cable
(CPEV-S 0.9 dia.)
Communication parameter:
With Configurator Software (model: R7CON)
• Data Mode
: RTU (default) or ASCII
• Parity:
NONE (default), ODD or EVEN
• Data bit:
8: RTU (default), 7: ASCII
•
Stop bit:
1 or 2 (default)
Baud rate setting
: With rotary switch
115.2 kbps, 57.6 kbps, 38.4 kbps (default), 28.8 kbps,
19.2 kbps, 14.4 kbps, 9600 bps, 4800 bps, 2400 bps,
1200 bps
Node address setting
: 1 - 99 (with rotary switch) (factory default setting: 00)
Terminating resistor
: Built-in (Selected with the DIP SW; factory setting: disabled)
INPUT SPECIFICATIONS
Common
: Positive or negative common (NPN/PNP) per
8 points
•
Open collector input (NPN, PNP)
Rated input voltage
: 24 V DC ±10 %; ripple 5 %p-p max.
ON voltage / current
: ≥ 16 V DC (V+ - PIx) / ≥ 3.7 mA
OFF voltage / current
: ≤ 5 V DC (V+ - PIx) / ≤ 1 mA
•
Voltage pulse input
ON voltage / current
: ≥ 16 V DC (PIx - Cx) / ≥ 3.7 mA
OFF voltage / current
: ≤ 5 V DC (PIx - Cx) / ≤ 1 mA
Input current
: ≤ 5.5 mA per point at 24 V DC
Input resistance
: Approx. 4.4 kΩ
ON delay
: ≤ 2.0 msec.
OFF delay
: ≤ 2.0 msec.
Max. Frequency
: 100 Hz (This unit is designed to be able to accept a frequency up to 100 Hz, however,‘chattering’ contact must be avoided for accurate measuring of such high frequency. Use relays that do not cause any chattering)
Minimum ON/OFF pulse requirements
: 5 msec.
Totalized pulse count
: 0 - 4 294 967 295
Max. totalized pulse count
: 1 000 - 4 294 967 295
(Factory default: 9 999 999)
Overflow reset value
: 0 or 1 (Factory default: 0)
INSTALLATION
Current consumption
•
AC
: Approx. 75 mA
•
DC
: Approx. 40 mA
Operating temperature
: -10 to +55°C (14 to 131°F)
Storage temperature
: -20 to +65°C (-4 to +149°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Atmosphere
: No corrosive gas or heavy dust
Mounting
: DIN rail (35 mm rail)
Weight
: 200 g (0.44 lb)
PERFORMANCE
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 1500 V AC @ 1 minute (input to Modbus or FG to power)
SIMULTANEOUS USE OF DISCRETE INPUT
In the firmware version V1.00 or later, the module can be simultaneously used as totalized pulse input and discrete input.
EXTERNAL VIEW
COMMUNICATION CABLE CONNECTIONS
TERMINAL ASSIGNMENTS
■ INPUT TERMINAL ASSIGNMENT
MODBUS FUNCTION CODES & SUPPORTED CODES
MODBUS I/O ASSIGNMENT
DATA CONVERSION
■ COUNT VALUE
The count value is 32-bit data. It is divided in 2 words of 16 bits represented with 2 addresses.The lower address is
allocated in the upper word (MSB) and the upper address in the lower word (LSB). The count value is 0 - 4 294 967 295.
The maximum count value available is 1 000 - 4 294 967 295. In case of overflow, the vaule is reset to 0 or 1
(configurable) from which the count will restart. The preset of the count value is also available. Use the R7CON or
commands for the configuration.
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
Caution: FG terminal is NOT a protective conductor terminal.