Configuration Notes:
With the ET 200S, the number of pluggable modules depends on the header module, the module width and the length of the configuration and parameterization messages.

IM 151-1
 

	BASIC 6ES7151-1CA00-0AB0	ST 6ES7151-1AA05-0AB0	ST  FO 6ES7151-1AB05-0AB0	HF 6ES7151-1BA02-0AB0
Bus length1)	max. 2m	max. 2m	max. 2m	max. 2m
Max. number of operable modules2)	12	63	63	63
Parameter data length3)	198 bytes	No limit on SIMATIC S7, otherwise 244 bytes5)	No limit on SIMATIC S7, otherwise 244 bytes5)	No limit on SIMATIC S7, otherwise 244 bytes5)
I/O address area4)	88 I/O bytes	244 I/O bytes	244 I/O bytes	244 I/O bytes

IM 151-1 COMPACT
 

	32DI STANDARD 6ES7151-1CA00-1BL0	16DI/16DO STANDARD 6ES7151-1CA00-3BL0
Bus length1)	Not applicable	Not applicable
Max. number of operable modules2)	12	12
Parameter data length3)	218 bytes	244 bytes
I/O address area4)	100 I/O bytes	100 I/O bytes

IM 151-3
 

	PN ST 6ES7151-3AA23-0AB0	PN FO 6ES7151-3BB23-0AB0	PN HF 6ES7151-3BA23-0AB0	PN HS 6ES7151-3BA60-0AB0
Bus length1)	max. 2m	max. 2m	max. 2m	max. 0.5m
Max. number of operable modules2)	63	63	63	32
Parameter data length3)	No limit	No limit	No limit	No limit
I/O address area4)	256 I/O bytes	256 I/O bytes	256 I/O bytes	180 I/O bytes

Interface module with integrated CPU
 

	IM 151-7 6ES7151-7AA20-0AB0 6ES7151-7AB00-0AB0 6ES7151-7FA20-0AB0	IM 151-8 PN/DP 6ES7151-8AB00-0AB0 6ES7151-8FB00-0AB0
Bus length1)	max. 2m	max. 2m
Max. number of operable modules2)	63	63
Parameter data length3)	244 bytes	-
I/O address area4)	244 I/O bytes	-

Notes:
¹⁾
For example, a digital or analog I/O module has a width of 15mm, a fail-safe module a width of 30mm and a DS motor starter a width of 45mm.

²⁾
The maximum number of operable modules stands for all modules that can be plugged between an interface module (IM) and the terminating module.

³⁾
Every module (including the interface and power modules) needs a parameterization message. The length of the parameterization message differs for the different modules. You can find out how long the parameterization message for a particular module is in the manual for the "ET 200S Distributed I/O System" in Entry ID 1144348. The values given in the "Parameter length" row in Table 1 above must not exceed the sum for the entire ET 200S row.
In the case of PROFINET IO, the parameter length is not relevant for the maximum configuration of the station.

⁴⁾
Most modules assign additional addresses in the I/O address area. Depending on the module used, input or output addresses or also input and output addresses can be assigned by a module. The number of addresses assigned depends on the type of the module. The maximum value specified (in Table 1, "I/O address area" row) must not exceed the sum for the entire ET 200S subrack.
If the I/O address area specified for the IM151-7 CPU is used as I slave, it serves as transfer memory with the higher-level master.
Altogether, the IM151-7 CPU and the IM158-2 PN/DP can address an address area of 2048 bytes. Thus, when using the IM151-7 CPU or the IM158-2 PN/DP, a maximum of 16336 digital I/O channels or 1021 analog I/O channels can be addressed.
If you use the IM151-7 CPU or the IM158-2 PN/DP as DP master, then you need the DP master interface 6ES7138-4HA00-0AB0 in addition.

⁵⁾
With the configuration as from STEP 7V5.4, you have the option of operating the IM 151-1 ST as from 6ES7151-1AA05-0AB0 in the DPV1 mode with more than 244 bytes of parameter data. Configuration with the GSD does not provide this option.
With the configuration as from STEP 7V5.4, you have the option of operating the IM151-1 FO as from 6ES7151-1AB05-0AB0 in the DPV1 mode with more than 244 bytes of parameter data. Configuration with the GSD does not provide this option.
With the configuration as from STEP 7V5.3 SP3, you have the option of operating the IM151-1 HF as from 6ES7151-1BA02-0AB0 in the DPV1 mode with more than 244 bytes of parameter data. Configuration with the GSD does not provide this option.

More information on IM151-7 is available in the manual "ET 200S IM 151-7 CPU Interface Module" in Entry ID: 12714722.

More information on IM151-8 is available in the manual "Interface Module IM151-8 PN/DP CPU" in Entry ID: 29738847.

Note:
Use the SIMATIC Selection Tool to configure your ET 200S station. This configurator guides you conveniently and simply through the configuration of an ET 200S station and supports you in selecting the various components and matching accessories.

The SIMATIC Selection Tool is in the configuration tool overview of the Industry Mall under Automation Technology.

Industry Mall