User`s manual

13-8
Specifications
13
[2] Communication specifications
Shown below are the specifications for the communication port, DeviceNet communication port, and
general purpose communication port on the JW-32CUM1.
(1) Communication port
Use the PG/COMM1 port or the PG/COMM2 port on the JW-32CUM1.
Item Specification
Communication standards
RS-232C/RS422A/ (Only the PG/COMM2 port for the
RS-232C)
Transfer speed
115200/57600/38400/19200/9600/4800/2400/1200
bps
Data length 7 bits
Parity bit Odd, even, none
Stop bits 1, 2 bits
Connection protocol 1: 1 (RS-232C), 1: N (RS-422A)
Communication format Conforms to the computer link
Connector D-sub15-pin
Number of stations that can be connected 31 max.
Note: When "RS-422A" is selected; only the 4-wire system (full duplex) can be used.
(2) DeviceNet communication port
Use of the DeviceNet communication port on the JW-32CUM1.
Item Specification
Communication protocol Conforms to the DeviceNet protocol
Basic operation mode Master mode, slave mode.
Number of nodes
connectable
Maximum of 63 nodes (slave station) for one master station.
Number of I/O points 4,096 points (max. 512 bytes: No. of total I/O points of I/O messages).
Communication speed 125 kbps, 250 kbps, or 500 kbps.
Communication
distance (max.)
Communication speeds 125 k bit/s 250 k bit/s 500 k bit/s
Trunk length using a thick cable 500m 250m 100m
Trunk length using a thin cable 100m 100m 100m
Maximum branch length 6m 6m 6m
Total branch length 156m 78m 39m
Communication services
I/O message function (Polling I/O function, Bit Strobe function) and
Explicit message function
Communication carrier
Dedicated cable (5 lines: 2 signal lines, 2 power lines, 1 shield line)
- Thick cable: For trunk lines
- Thin cable: For trunk or branch lines
Data table allocation
method when the
master mode is selected
Select the method used for I/O data mapping in the scan list edit mode
from "allocation in address order," "even number allocation," or
"allocation in the order in which vacant nodes are occupied."
Specify the number of
input/output bytes when
slave mode is selected.
Number of input bytes: 0 to 127 bytes
Number of output bytes: 0 to 127 bytes
(3) General purpose communication port
Use of the general purpose communication terminal block on the JW-32CUM1.
Item Specification
Communication
mode
Remote I/O
(master station)
Number of slave stations: Max. 4
Number of remote I/O points: 128 per station, 512 points in
total, fixed allocation
Data link DL1
(master station)
Number of slave stations: Max. 15
Number of link bytes: 64 in total
Data link DL9
(master station)
Number of slave stations: Max. 15
Number of link bytes: Select 64, 128, or 256
M net
(master station)
Number of slave stations: Max. 7
Transfer speed: Select 19.2 kbps or 38.4 kbps.
Allocation of CU data memory Fixed: module No. switch set to "0" and station number set to "0."
Wiring method 2-wire system
- Selectable any method for the communication mode.
- Each communication mode setting can be changed using internal switches in the JW-32CUM1.