Epson RC700 Manual page 68

2. Installation
Station
There are four types of stations (devices):
Master
Slave
Repeater
Configurator
You can install masters anywhere in the network. You can connect up to 126 stations
including server and repeater in the network. However, it is recommended to keep one
device for the engineering device.
Network Cable
The PROFIBUS cable can be used as a network cable. There are four types (A, B, C, and
D) of PROFIBUS cables. Normally, cable type A is used for PROFIBUS DP network.
The cable type A specifications are shown in the table below.
Impedance
Capacity
Loop resistance
Wire diameter
Core cross-section
It is recommended to use a 9-pin D-Sub connector for protecting rating IP 20. For IP
65/67, M12 connector (IEC 947-5-2 compliant), Han-Bird connector (DESINA compliant),
and Siemens hybrid connector are available.
Pin assignment (9-pin D-Sub)
Pin No.
Use pins 2 and 7 for connecting a maintenance device without any power supply.
58
: Controls a network and gathers its slaves.
: External I/O and other devices/
Slave outputs data as a response to a master's output order and informs
the master of its input status.
: Repeater is necessary for a network with more than 32 slaves to separate
network segments.
: Used only for network installation. It configures a scan list of the slaves
on the master device.
Item
135 to 165 Ω
< 30 pf/m
110 Ω/km
0.64 mm
> 0.34 mm2
Signal
1 Shield
2 M24
3 RxD/TxD-P
4 CNTR-P
5 DGND
6 VP
7 P24
8 RxD/TxD-N
9 CNTR-N
Specification
Assignment
Shield / Protective ground
Ground of output voltage (24 V)
Data line B
Repeater control signal (directional control)
Communications power supply (5 V)
Supply voltage to terminating resistor (P5V)
Output voltage (24 V)
Data line A
Repeater control signal (directional control)
RC700 / RC90 Option Fieldbus I/O Rev.12